Water heater

Abstract

The utility model provides a water heater which comprises a battery, a power control module, a BMS control module, an alternating current charging module, a direct current heating body, a sensor, a water pipe, a regulating valve and a fire sprinkler. The direct-current heating body is connected with a battery for supplying power to the direct-current heating body through a power control module, and / or the direct-current heating body is also connected with an alternating-current charging module for supplying power to the direct-current heating body; the direct-current heating body is arranged on the outer wall of the water pipe, the sensor is arranged at the water inlet end and / or the water outlet end of the water pipe, and the sensor is connected with the BMS control module; the sensor comprises at least one of a temperature sensor and a water flow sensor; the BMS control module is connected with a direct-current heating body of which the output power is controlled through the BMS control module; the alternating current charging module is connected with a battery charged through the alternating current charging module based on the power control module; and a regulating valve is arranged on the water pipe and is connected with the fire-fighting spray head. According to the utility model, the water flow in the water pipe can be rapidly heated.

Description

A water heater Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a water heater. Background Technology

[0002] Traditional instant water heaters rely on AC power of 5kW or higher for heating and require a dedicated circuit for installation. In addition, the metal heating element technology in traditional instant water heaters directly heats the water flow through an immersion metal heating tube, or by placing the heating tube inside the water circuit to create a "dry burning" state to avoid the risk of water-electricity contact, but in reality, the problem of welding corrosion between metals still exists. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a water heater, which includes: a battery, a power control module, a BMS control module, an AC charging module, a DC heating element, a sensor, a water pipe, a regulating valve, and a fire sprinkler head. The sensor includes at least one of the following: a temperature sensor and a water flow sensor. First, the DC heating element is powered by the battery to heat the water flow, eliminating the need for a dedicated circuit and reducing costs. Second, the heating element's heating tube is wound around the outer wall of the water pipe to heat the water flow, ensuring high safety. Third, the DC heating element is powered by both the battery and the AC charging module, providing a large power supply and rapid water heating.

[0004] In a first aspect, this utility model provides a water heater, comprising:

[0005] Battery, power control module, BMS control module, AC charging module, DC heating element, sensor, water pipe, regulating valve, fire sprinkler head; among which,

[0006] The DC heating element is connected to a battery that powers the DC heating element via a power control module, and / or the DC heating element is also connected to an AC charging module that powers the DC heating element; wherein, the DC heating element is disposed on the outer wall of the water pipe, and the sensor is disposed at the inlet and / or outlet of the water pipe, and the sensor is connected to the BMS control module, wherein the sensor includes at least one of the following: a temperature sensor and a water flow sensor;

[0007] The BMS control module is connected to a DC heating element whose output power is controlled by the BMS control module; the AC charging module is connected to the battery that is charged by the AC charging module based on the power control module.

[0008] The water pipe is also equipped with a regulating valve, which is connected to the fire sprinkler head.

[0009] In one optional implementation, the BMS control module is specifically connected to a DC heating element whose output power is controlled by the BMS control module, and the DC heating element is powered by both a battery and an AC charging module.

[0010] In one optional implementation, the DC heating element is specifically powered by both a battery and an AC charging module.

[0011] In one optional implementation, during a first time period, the DC heating element is specifically powered by a battery, and during a second time period, the DC heating element is specifically powered by an AC charging module, wherein the first time period precedes the second time period.

[0012] In one optional implementation, during the third time period, the BMS control module is connected to a DC heating element whose output power is controlled by the BMS control module and which is powered by an AC charging module; during the fourth time period, the BMS control module is connected to a DC heating element whose output power is controlled by the BMS control module and which is powered by a battery; wherein the third time period precedes the fourth time period.

[0013] In one optional implementation, a communication module is used to forward the received user-input control information to the BMS control module, wherein the communication module is connected to the BMS control module, and the communication module integrates a WIFI communication module and a Bluetooth communication module.

[0014] In one optional implementation, the wall switch control module, which is wirelessly connected to the communication module, is used to send control information input by the user to the communication module.

[0015] In one alternative implementation, a cloud server that is wirelessly connected to the communication module is used to send control information input by the user to the communication module.

[0016] In one optional embodiment, the power control module includes: a first MOSFET, a second MOSFET, and a fuse, wherein the first MOSFET and the second MOSFET are connected in series and then connected to the negative terminal of the battery.

[0017] The first MOSFET is used to control the on / off state of the circuit that charges the battery based on the AC charging module;

[0018] The second MOSFET is used to control the on / off state of the circuit that supplies power to the DC heating element from the battery.

[0019] In one optional embodiment, the DC heating element includes a heating element heating tube, wherein the heating element heating tube is a heating tube wound around the outer wall of the water pipe and has a spiral shape.

[0020] In one optional embodiment, the regulating valve includes: a three-way regulating valve or a two-way regulating valve;

[0021] The water pipe is also equipped with a three-way regulating valve at the inlet or outlet, which is connected to the fire sprinkler head via a fire water pipe; or, the water pipe is also equipped with a two-way regulating valve at the inlet or outlet, which is connected to the fire sprinkler head via a fire water pipe.

[0022] In one alternative implementation, when the sensor includes a temperature sensor and a water flow sensor,

[0023] Temperature sensors are installed at the inlet and outlet of the water pipe to detect the water temperature at both ends. Similarly, flow sensors are installed at both ends to detect the water flow velocity at both ends.

[0024] In one optional embodiment, the battery, power control module, and BMS control module are integrated into the first housing, while the DC heating element, temperature sensor, and water flow sensor are integrated into the second housing. The first housing and the second housing are connected via a plug-in connector.

[0025] This utility model provides a water heater, comprising: a battery, a power control module, a BMS control module, an AC charging module, a DC heating element, a sensor, a water pipe, a regulating valve, and a fire sprinkler head; wherein, the DC heating element is connected to the battery supplying power to the DC heating element via the power control module, and / or the DC heating element is also connected to the AC charging module supplying power to the DC heating element; wherein, the DC heating element is disposed on the outer wall of the water pipe, the sensor is disposed at the inlet end and / or outlet end of the water pipe, and the sensor is connected to the BMS control module, the sensor including at least one of the following: a temperature sensor, a water flow sensor; the BMS control module is connected to the DC heating element whose output power is controlled by the BMS control module; the AC charging module is connected to the battery charging via the AC charging module based on the power control module; a regulating valve is also disposed on the water pipe, wherein the regulating valve is connected to the fire sprinkler head. This invention offers several advantages. First, it powers the DC heating element via a battery, achieving water heating without requiring a dedicated circuit, thus reducing costs. Second, the heating element's heating tube is wound around the outer wall of the water pipe to heat the water, ensuring high safety. Third, a regulating valve is installed on the water pipe, connected to a fire sprinkler head, allowing for fire extinguishing in case of fire in the water heater or battery. Fourth, the DC heating element is powered simultaneously by a battery and an AC charging module, providing significant power and enabling rapid water heating. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 is a structural schematic diagram of a water heater provided by this utility model;

[0028] Among them, 1-battery, 2-power control module, 3-BMS control module, 4-AC charging module, 5-DC heating element, 6-sensor, 7-water inlet of water pipe, 8-water outlet of water pipe, 9-fire sprinkler head, 10-AC power grid, 11-communication module, 12-wall switch control module, 13-cloud server, 14-fire water pipe. Detailed Implementation

[0029] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] It should be noted that the terms "first," "second," "third," and "fourth" in this utility model are only used to distinguish different time periods, MOS transistors, housings, etc., and have no other meaning, and should not limit the scope of protection of this utility model.

[0031] Referring to Figure 1, which is a structural schematic diagram of a water heater provided by this utility model, as shown in Figure 1, the water heater may include, but is not limited to:

[0032] 1. Battery; 2. Power control module; 3. BMS control module; 4. AC charging module; 5. DC heating element; 6. Sensor; 7. Water pipes, regulating valves, and fire sprinklers; 8.

[0033] The DC heating element 5 is connected to the battery 1 that powers the DC heating element 5 via the power control module 2, and / or the DC heating element 5 is also connected to the AC charging module 4 that powers the DC heating element 5; wherein,

[0034] The DC heating element 5 is disposed on the outer wall of the water pipe, and the sensor 6 is disposed at the water inlet end 7 and / or the water outlet end 8 of the water pipe. The sensor 6 is connected to the BMS (Battery Management System) control module 3. The sensor 6 includes at least one of the following: a temperature sensor and a water flow sensor.

[0035] BMS control module 3 is connected to DC heating element 5 whose output power is controlled by BMS control module 3; AC charging module 4 is connected to battery 1 which is charged by AC charging module 4 based on power control module 2.

[0036] A regulating valve is also installed on the water pipe, which is connected to the fire sprinkler head 9. The fire sprinkler head 9 can be used to extinguish fires in the battery 1 or the water heater. The battery 1 may include, but is not limited to, lithium iron phosphate batteries with a discharge rate of 10C or higher, or semi-solid-state batteries with a discharge rate of 10C or higher, and the battery 1 may be composed of multiple battery cells connected in series.

[0037] Preferably, the power of the DC heating element 5 is greater than or equal to 5KW; the power of the AC charging module 4 is less than or equal to 2.2KW, and the AC charging module 4 is connected to the AC power grid 10.

[0038] It should be noted that the AC charging module 4 is connected to the battery 1, which is charged through the AC charging module 4, based on the power control module 2. Specifically, referring to Figure 1, the AC power grid 10 transmits electrical energy to the power control module 2 through the interface (P+, P-) of the AC charging module 4, and then charges the battery 1 through the interface (B+, B-) of the power control module 2.

[0039] This solution allows the battery 1 to be charged by receiving electrical energy from the AC grid 10 through the AC charging module 4 during off-peak hours (when electricity costs are lower), thus reducing electricity costs.

[0040] Regarding the DC heating element 5 being connected to the battery 1 that powers the DC heating element 5 via the power control module 2, and / or the DC heating element 5 also being connected to the AC charging module 4 that powers the DC heating element 5, the specific solutions may include, but are not limited to, the following.

[0041] Option 1: The DC heating element 5 is connected to the battery 1 that supplies power to the DC heating element 5 through the power control module 2. The battery 1 supplies power to the DC heating element 5. Specifically, referring to Figure 1, the battery 1 transmits electrical energy to the power control module 2 through its internal interface (B+, B-), and supplies power to the battery heating element 5 through the interface (P+, P-) of the power control module 2.

[0042] This solution allows the water heater to continue operating normally during power outages by powering the DC heating element 5 via battery 1. Furthermore, by charging the battery 1 with electricity from the AC grid 10 via the AC charging module 4 during off-peak hours, electricity costs can be reduced. In addition, the water heating is achieved by powering the DC heating element 5 via battery 1 without the need for a dedicated circuit, resulting in lower costs.

[0043] Option 2: The DC heating element 5 is connected to the battery 1 that powers the DC heating element 5 via the power control module 2, and the DC heating element 5 is also connected to the AC charging module 4 that powers the DC heating element 5. With this option, the DC heating element 5 is powered by both the battery 1 and the AC charging module 4, which increases the maximum power output, heats up faster, and maintains a constant water temperature even when the household circuit voltage is unstable.

[0044] Option 3: The DC heating element 5 is also connected to the AC charging module 4 that supplies power to the DC heating element 5. Specifically, referring to Figure 1, the AC charging module 4 receives electrical energy from the AC power grid 10 and outputs the electrical energy to the DC heating element 5 through the interface (P+, P-) of the AC charging module 4 to realize the power supply to the DC heating element 5.

[0045] Preferably, the BMS control module 3 is specifically connected to the DC heating element 5 whose output power is controlled by the BMS control module 3, and the DC heating element 5 is powered by both the battery 1 and the AC charging module 4, specifically in the following ways:

[0046] Method 1: The BMS control module 3 is specifically connected to the DC heating element 5, whose output power is controlled by the BMS control module 3, and the DC heating element 5 is powered by both the battery 1 and the AC charging module 4. Using this method, the DC heating element 5 is powered by both the battery 1 and the AC charging module 4, which increases the maximum power output, heats up faster, and maintains a constant water temperature even when the household circuit voltage is unstable.

[0047] Specifically, referring to Figure 1, the BMS control module 3 inputs control information to the power control module 2 through the interface (G, S) to realize the power supply of the battery 1 to the DC heating element 5. At the same time, the BMS control module 3 inputs control information to the AC charging module 4 through the interface (TX1, TX2) to realize the power supply of the AC charging module 4 to the DC heating element 5.

[0048] For example, when the DC heating element 5 is running at a power of 5.5KW, the battery 1 provides a power of 4KW, and the AC charging module 4 provides a power of 1.5KW.

[0049] Method 2: The BMS control module 3 is specifically connected to the DC heating element 5 whose output power is controlled by the BMS control module 3. In the first time period, the DC heating element 5 is specifically powered by the battery 1, and in the second time period, the DC heating element 5 is specifically powered by the AC charging module 4. The first time period precedes the second time period.

[0050] For example, firstly, in the first time period, the battery 1 provides power to the DC heating element 5 to heat the water flow in the water pipe and raise the water flow to a first temperature. Then, in the second time period, the AC charging module 4 supplies power to the DC heating element 5 to raise the water flow from the first temperature to a second temperature.

[0051] Method 3: The BMS control module 3 is specifically connected to the DC heating element 5 whose output power is controlled by the BMS control module 3, and in the third time period, the DC heating element 5 is specifically powered by the AC charging module 4, and in the fourth time period, the DC heating element 5 is specifically powered by the battery 1; wherein, the third time period precedes the fourth time period.

[0052] For example, firstly, in the third time period, the AC charging module 4 provides power to the DC heating element 5 to heat the water flow in the water pipe and raise the water flow to the third temperature. Then, in the fourth time period, the battery 1 supplies power to the DC heating element 5 to raise the water flow from the third temperature to the fourth temperature.

[0053] Specifically, the power control module 2 may include, but is not limited to, a first MOSFET, a second MOSFET, and a fuse. The first and second MOSFETs are connected in series and then to the negative terminal of the battery 1. The fuse is used to disconnect or bypass the water heater and / or the power control module 2 by blowing its fuse when the water heater and / or the power control module 2 malfunctions.

[0054] The first MOSFET can be used to control the on / off state of the circuit that charges the battery 1 based on the AC charging module 4;

[0055] The second MOSFET can be used to control the on / off state of the circuit that supplies power to the DC heating element 5 based on battery 1.

[0056] Specifically, the DC heating element 5 may include, but is not limited to, one or more heating element heating tubes, wherein the heating element heating tube is a heating tube wound around the outer wall of the water pipe and is spiral in shape. That is, the heating element heating tube in the DC heating element 5 is wound around the outer wall of the water pipe to heat the water flow, which is highly safe.

[0057] Specifically, the regulating valve may include, but is not limited to: a three-way regulating valve or a two-way regulating valve; wherein,

[0058] When the regulating valve is a three-way regulating valve, that is, the water inlet 7 or the water outlet 8 of the water pipe is also equipped with a three-way regulating valve. The three-way regulating valve is connected to the fire sprinkler head 9 through the fire water pipe 14. When the water heater or battery 1 catches fire, the high temperature triggers the fire sprinkler head 9 to spray water in the direction of the battery 1.

[0059] When the regulating valve is a two-way regulating valve, that is, the water inlet end 7 or the water outlet end 8 of the water pipe is also equipped with a two-way regulating valve. The two-way regulating valve is connected to the fire sprinkler head 9 through the fire water pipe 14. When the water heater or battery 1 catches fire, the high temperature triggers the fire sprinkler head 9 to spray water in the direction of the battery 1.

[0060] More specifically, when the DC heating element 5 is connected to the AC charging module 4 that supplies power to the DC heating element 5, the DC heating element 5 is also connected to the battery 1 that supplies power to the DC heating element 5 via the power control module 2; or,

[0061] The DC heating element 5 is connected to the AC charging module 4 that supplies power to the DC heating element 5, or the DC heating element 5 is also connected to the battery 1 that supplies power to the DC heating element 5 through the power control module 2.

[0062] More specifically, sensor 6 is disposed at the inlet end 7 and / or the outlet end 8 of the water pipe, and sensor 6 includes at least one of the following: a temperature sensor, a water flow sensor, and may include the following schemes:

[0063] Option 1: When sensor 6 includes a temperature sensor and a water flow sensor,

[0064] Temperature sensors are installed at the inlet 7 and outlet 8 of the water pipe, respectively, and can simultaneously detect the water temperature at the inlet 7 and the water temperature at the outlet 8. In addition, water flow sensors are also installed at the inlet 7 and outlet 8 of the water pipe, and can simultaneously detect the water flow velocity at the inlet 7 and the water flow velocity at the outlet 8.

[0065] Option 2: When sensor 6 includes a temperature sensor and a water flow sensor,

[0066] A temperature sensor is installed at the water outlet 8 of the water pipe to detect the temperature of the water flow at the water outlet 8, and a water flow sensor is installed at the water outlet 8 of the water pipe to detect the water flow speed at the water outlet 8.

[0067] Option 3: When sensor 6 includes a temperature sensor and a water flow sensor,

[0068] A temperature sensor is installed at the water inlet 7 of the water pipe to detect the temperature of the water flow at the water inlet 7, and a water flow sensor is installed at the water inlet 7 of the water pipe to detect the water flow speed at the water inlet 7.

[0069] Option 4: When sensor 6 includes a temperature sensor and a water flow sensor,

[0070] A temperature sensor is installed at the water outlet 8 of the water pipe to detect the temperature of the water flow at the water outlet 8, and a water flow sensor is installed at the water inlet 7 of the water pipe to detect the water flow speed at the water inlet 7.

[0071] Option 5: When sensor 6 includes a temperature sensor and a water flow sensor,

[0072] A temperature sensor is installed at the inlet end 7 of the water pipe to detect the temperature of the water flow at the inlet end 7, and a water flow sensor is installed at the outlet end 8 of the water pipe to detect the water flow speed at the outlet end 8.

[0073] Option 6: When sensor 6 is only a temperature sensor,

[0074] Temperature sensors are installed at the inlet 7 and outlet 8 of the water pipe, respectively, and can simultaneously detect the temperature of the water flow at the inlet 7 and the temperature of the water flow at the outlet 8.

[0075] Option 7: When sensor 6 is only a water flow sensor,

[0076] The water flow sensors are installed at the inlet end 7 and the outlet end 8 of the water pipe, respectively, and can simultaneously detect the water flow velocity at the inlet end 7 and the water flow velocity at the outlet end 8.

[0077] Preferably, the water heater includes: a battery 1, a power control module 2, a BMS control module 3, an AC charging module 4, a DC heating element 5, a sensor 6, water pipes, a regulating valve, and a fire sprinkler head 9, and may also include, but is not limited to, any one or more of the following: a communication module 11, a wall switch control module 12 wirelessly connected to the communication module 11, and a cloud server 13 or a display screen wirelessly connected to the communication module 11.

[0078] The communication module 11 can be used to forward the received user input control information to the BMS control module 3. The communication module 11 is connected to the BMS control module 3 and is a module that integrates a WIFI communication module and a Bluetooth communication module.

[0079] The wall switch control module 12, which wirelessly communicates with the communication module 11, can be used to send user-input control information to the communication module 11. The wall switch control module 12 can be a module that integrates a WIFI communication module and / or a Bluetooth communication module, capable of transmitting control information with the communication module 11. The wall switch control module 12 can also receive user-input control information. Specifically, referring to Figure 1, the communication module 11 can receive control information from the wall switch control module 12 via a BLE interface.

[0080] The wall switch control module 12 can be used to receive control information input by the user. For example, when the wall switch control module 12 is a control module with an integrated touch screen, the control module with an integrated touch screen can receive control information corresponding to the touch operation input by the user.

[0081] The cloud server 13, which wirelessly communicates with the communication module 11, can be used to send user-input control information to the communication module 11. The cloud server 13 can be a device that integrates a WIFI communication module and / or a Bluetooth communication module, capable of transmitting control information with the communication module 11. Specifically, referring to Figure 1, the communication module 11 can receive control information from the cloud server 13 via a WIFI interface.

[0082] The display screen can be used to display the working status of the water heater (it can display one or more of the following: the water temperature of the water flow at the inlet 7, the water temperature of the water flow at the outlet 8, the water flow speed at the inlet 7, and the water flow speed at the outlet 8) and the power of the battery 1.

[0083] Figure 1 is only used to illustrate the embodiments of this utility model and should not be used to limit the scope of protection of this utility model.

[0084] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A water heater, characterized in that, include: The system comprises a battery (1), a power control module (2), a BMS control module (3), an AC charging module (4), a DC heating element (5), a sensor (6), a water pipe, a regulating valve, and a fire sprinkler head (9); wherein the DC heating element (5) is connected to the battery (1) that supplies power to the DC heating element (5) through the power control module (2), and / or the DC heating element (5) is also connected to the AC charging module (4) that supplies power to the DC heating element (5); wherein the DC heating element (5) is disposed on the outer wall of the water pipe, the sensor (6) is disposed at the inlet end (7) and / or outlet end (8) of the water pipe, and the sensor (6) is connected to the BMS control module (3), wherein the sensor (6) includes at least one of the following: a temperature sensor, a water flow sensor; the BMS control module (3) is connected to the DC heating element (5); the AC charging module (4) is connected to the battery (1) that is charged through the AC charging module (4) based on the power control module (2); a regulating valve is also disposed on the water pipe, wherein the regulating valve is connected to the fire sprinkler head (9).

2. The water heater as described in claim 1, characterized in that, The BMS control module (3) is specifically connected to the DC heating element (5) whose output power is controlled by the BMS control module (3), and the DC heating element (5) is powered by the battery (1) and the AC charging module (4).

3. The water heater as described in claim 2, characterized in that, The DC heating element (5) is powered by both the battery (1) and the AC charging module (4).

4. The water heater as described in claim 2, characterized in that, In the first time period, the DC heating element (5) is specifically powered by the battery (1), and in the second time period, the DC heating element (5) is specifically powered by the AC charging module (4), wherein the first time period precedes the second time period.

5. The water heater as described in claim 2, characterized in that, In the third time period, the DC heating element (5) is specifically powered by the AC charging module (4), and in the fourth time period, the DC heating element (5) is specifically powered by the battery (1); wherein, the third time period precedes the fourth time period.

6. The water heater as described in claim 1, characterized in that, Also includes: The communication module (11) is used to forward the received user input control information to the BMS control module (3). The communication module (11) is connected to the BMS control module (3). The communication module (11) integrates a WIFI communication module and a Bluetooth communication module.

7. The water heater as described in claim 6, characterized in that, Also includes: The wall switch control module (12) is wirelessly connected to the communication module (11) and is used to send the control information input by the user to the communication module (11).

8. The water heater as described in claim 6, characterized in that, Also includes: A cloud server (13) that wirelessly communicates with the communication module (11) is used to send the control information input by the user to the communication module (11).

9. The water heater as described in claim 1, characterized in that, The power control module (2) includes: a first MOSFET, a second MOSFET and a fuse. The first MOSFET and the second MOSFET are connected in series and then connected to the negative terminal of the battery (1). The first MOSFET is used to control the on / off state of the circuit that charges the battery (1) based on the AC charging module (4). The second MOSFET is used to control the on / off state of the circuit that supplies power to the DC heating element (5) based on the battery (1).

10. The water heater as described in claim 1, characterized in that, The DC heating element (5) includes: a heating element heating tube, wherein the heating element heating tube is a heating tube wound around the outer wall of the water pipe and is spiral in shape.

11. The water heater as described in claim 1, characterized in that, The regulating valve includes: a three-way regulating valve or a two-way regulating valve; the inlet (7) or outlet (8) of the water pipe is also specifically equipped with a three-way regulating valve, and the three-way regulating valve is connected to the fire sprinkler (9) through a fire water pipe (14); or, the inlet (7) or outlet (8) of the water pipe is also specifically equipped with a two-way regulating valve, and the two-way regulating valve is connected to the fire sprinkler (9) through a fire water pipe (14).

12. The water heater as described in claim 1, characterized in that, When the sensor (6) includes a temperature sensor and a water flow sensor, the temperature sensor is set at the inlet (7) and outlet (8) of the water pipe respectively, and simultaneously detects the temperature of the water flow at the inlet (7) and the temperature of the water flow at the outlet (8). In addition, the water flow sensor is also set at the inlet (7) and outlet (8) of the water pipe respectively, and simultaneously detects the water flow velocity at the inlet (7) and the water flow velocity at the outlet (8).

13. The water heater as described in claim 1, characterized in that, The battery (1), power control module (2), and BMS control module (3) are integrated in the first housing, while the DC heating element (5) and sensor (6) are integrated in the second housing. The first housing and the second housing are connected by a plug-in connector.

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