Marine battery pack and safety protection control system

Abstract

The invention discloses a marine battery pack and a safety protection control system, and relates to the field of battery packs, the marine battery pack comprises a battery pack main body, a plurality of rows of battery modules are fixedly mounted in the battery pack main body, a gap is formed between two adjacent rows of battery modules of the battery pack main body, and a protection device is mounted in the gap. According to the marine battery pack disclosed by the invention, the safety protection structure is integrally mounted on the protection device, and the protection device is arranged in the gap between the two adjacent rows of battery modules and can move along the direction of the gap, so that each position of each battery module in the battery pack can be reached; through the structural arrangement, the safety protection pressure of the marine battery pack is greatly reduced, and meanwhile, the amount of a cooling medium carried by the battery pack can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of battery packs, and in particular to a marine battery pack and a safety protection control system. Background Art

[0002] As we all know, battery packs are developing rapidly as an important energy storage solution. The advancement of battery pack design and manufacturing technology has directly affected the development of various fields, such as portable electronic devices, energy storage systems and grid regulation; For example, the authorization announcement number is CN114639882B, the authorization announcement date is 2024.04.16, and the name is a battery pack thermal runaway protection system, including a linear temperature-sensing fire detector, a battery management main control, and a thermal aerosol fire extinguisher; the linear temperature-sensing fire detector is laid on the surface of the battery module and runs through the entire battery module, and is used to detect the surface temperature of the battery module; the battery management main control is respectively connected to the linear temperature-sensing fire detector and the thermal aerosol fire extinguisher, and is used to prevent the battery module from thermal runaway...; Similar to the above application, in the existing battery pack safety control system or control structure, since each battery pack is provided with multiple battery modules, especially the battery packs on large equipment and machinery, such as ships and automobiles, have more battery modules inside. Therefore, when protecting the battery pack safety, it is necessary to install cooling medium spraying devices at multiple positions inside the battery pack. Therefore, the pipelines are arranged more and more complicated, which seriously occupies the internal space of the battery pack. In addition, in the existing battery pack structure, when one or more battery modules in the battery pack are abnormal, only a single spraying method can be used, and the entire battery pack is often affected during spraying. This not only causes waste of cooling medium, but also easily affects the use of other battery modules. Summary of the invention

[0003] 1. Purpose of the invention In view of this, the purpose of the present invention is to propose a marine battery pack and a safety protection control system to achieve fixed-point protection inside the battery pack and greatly reduce the safety protection pressure of the marine battery pack. At the same time, this can reduce the amount of cooling medium carried by the battery pack.

[0004] (II) Technical solution In order to achieve the above technical objectives, the present invention provides a marine battery pack, which includes a battery pack body, in which a plurality of columns of battery modules are fixedly installed, the battery pack body is located between two adjacent columns of battery modules, and a protective device is installed in the gap; The protective device includes: a horizontal frame installed along the gap direction between battery modules and a T frame installed above the horizontal frame, wherein the horizontal part and the vertical part of the T frame respectively cover the top and one side of the battery module, and the T frame can slide along the length direction of the horizontal frame. Protective medium pipelines are installed below the horizontal part and outside the vertical part of the T frame, and multiple groups of medium spraying components are equidistantly installed on the protective medium pipelines.

[0005] As a further description of the above technical solution: the protective medium pipeline includes an inner tube and an outer tube, wherein the inner tube is inserted into the interior of the outer tube; The medium spraying assembly includes a first medium nozzle and a second medium nozzle, wherein the first medium nozzle and the second medium nozzle are both fixedly mounted on the outer tube, and the first medium nozzle is communicated with the interior of the outer tube, and the second medium nozzle is communicated with the interior of the inner tube.

[0006] As a further description of the above technical solution: two groups of first medium pipe joints and two groups of second medium pipe joints are installed under one side of the T-frame, wherein the two groups of first medium pipe joints are respectively connected to the outer pipes on both sides of the T-frame, and the two groups of second medium pipe joints are connected to the inner pipes on both sides of the T-frame.

[0007] As a further description of the above technical solution: the protective device also includes a cooling medium storage tank, wherein the cooling medium storage tank is installed on the outside of the battery pack body, and a first medium storage tank for storing a first medium and a second medium storage tank for storing a second medium are arranged inside the cooling medium storage tank, and two groups of second medium pipe joints are connected to the second medium storage tank through a medium hose, and two groups of first medium pipe joints are connected to the first medium storage tank through a medium hose.

[0008] As a further description of the above technical solution: a slide is fixedly installed at the bottom of the T-frame, and the slide is slidably engaged on the cross frame. A slide groove is opened on the upper surface of the cross frame along the length direction, and a clamping piece is installed at the bottom of the slide, and the clamping piece is slidably assembled in the slide groove.

[0009] As a further description of the above technical solution: a servo motor is installed at one end of the cross frame, a screw rod is rotatably installed in the slide groove along the length direction, the output shaft of the servo motor is fixedly connected to one end of the cross frame, a screw nut adapted to the screw rod is embedded in the engaging part, and the screw nut is screwed and sleeved with the screw rod.

[0010] As a further description of the above technical solution: the protective device also includes a temperature sensor and a controller, wherein a plurality of temperature sensors are provided and are respectively installed inside the battery pack body at corresponding positions of each battery module, and the controller is installed outside the battery pack body, the temperature sensor is electrically connected to the controller, and the controller is electrically connected to the first medium storage tank, the second medium storage tank and the servo motor.

[0011] The present invention also discloses a safety protection control system, which is applied to a marine battery pack, comprising: Data acquisition module, collecting temperature information of battery modules inside the marine battery pack; The data processing module processes and analyzes the temperature information of the battery module to determine whether the battery module is abnormal. If abnormal, it marks it as an abnormal battery module, calculates the abnormal rate of the abnormal battery module, and compares the abnormal rate with a preset abnormal rate threshold to determine the abnormal level of the abnormal battery module; The control module generates a first control instruction or a second control instruction according to the abnormal level of the abnormal battery module, and controls the protection device to perform a protection operation.

[0012] As a further description of the above technical solution: the method for determining whether the battery module is abnormal includes: By time The temperature of the battery module is collected at the time interval of collection, which is recorded as , set the abnormal temperature threshold to ; The collected and For comparison, then: when , , Both greater than When the battery module is judged to be abnormal, , , Respectively , No. , No. The temperature of the battery module collected at time intervals, , The value of is an integer greater than 1; Methods for calculating the abnormal rate of abnormal battery modules include: when = hour, ; when > hour, ; when < hour, ; in, and are the temperature of the abnormal battery module and the temperature of the battery module adjacent to the abnormal battery module collected at the same time point, is the abnormal rate of abnormal battery modules, , , Respectively , No. , No. The temperature of the abnormal battery module collected at time intervals, , , Respectively , No. , No. The temperature of the battery module adjacent to the abnormal battery module collected at time intervals, is the time interval, is the influence weight of the temperature of the adjacent battery module on the abnormal battery module temperature; Methods for determining the abnormal level of an abnormal battery module include: The preset abnormal rate threshold is , the collected data is processed by the data processing module and For comparison, then: when ≤ When , the abnormal level is determined to be level one; when > , the abnormality level is determined to be level 2.

[0013] As a further description of the above technical solution: the control module generates a first control instruction or a second control instruction according to the abnormal level of the abnormal battery module, and controls the protection device to perform a protection operation as follows: When the abnormality level is level one, a first control instruction is generated to spray a first medium onto the abnormal battery module; When the abnormality level is level 2, a second control instruction is generated to spray a second medium onto the abnormal battery module.

[0014] In the above technical solution, the present invention provides a marine battery pack and a safety protection control system, wherein the marine battery pack integrates the safety protection structure into the protection device, and the protection device is arranged in the gap between two adjacent columns of battery modules, and the protection device can move along the direction of the gap, so as to reach each position of each battery module inside the battery pack, and realize the fixed-point protection inside the battery pack. Such a structural setting greatly reduces the safety protection pressure of the marine battery pack, and at the same time, it can reduce the amount of cooling medium carried by the battery pack; The marine battery pack is designed with two medium storage tanks and two medium spraying pipelines, so the protective device can select appropriate medium protection according to the internal state of the battery pack, thereby making the overall applicability of the device stronger, and the two medium spraying pipelines in the marine battery pack share an outer tube space, that is, the inner tube is inserted inside the outer tube, so the layout of the pipeline saves space, thereby reducing the internal space pressure of the battery pack; The data acquisition module of the safety protection control system in the present invention can continuously collect the temperature of the battery modules inside the battery pack. When the temperature of a battery module exceeds the preset parameters, the battery module is determined to be an abnormal battery module. At this time, the data processing module can combine the temperatures of the battery modules adjacent to the abnormal battery module, calculate the abnormal rate of the abnormal battery module, and comprehensively judge the abnormal level of the abnormal battery module based on the abnormal rate. Finally, the control module can select a suitable cooling medium to cool the battery according to the actual abnormal level. This can greatly improve the overall service life of the battery pack (different cooling media have different effects on the internal structure of the battery pack. Generally, media that can cool faster have greater corrosion to the internal structure of the battery pack). Therefore, selecting a suitable cooling medium can effectively improve the service life of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the overall structure of a marine battery pack provided by the present invention; Figure 2 A schematic diagram of the internal structure of a marine battery pack provided by the present invention; Figure 3 A schematic diagram of the structure of a protective device for a marine battery pack provided by the present invention; Figure 4 A marine battery pack provided by the present invention Figure 3 Schematic diagram of the enlarged structure of the middle A area; Figure 5 A schematic diagram of a T-frame structure in a marine battery pack provided by the present invention; Figure 6 A schematic cross-sectional diagram of a medium pipeline in a marine battery pack provided by the present invention; Figure 7 A system block diagram of a safety protection control system for a marine battery pack provided by the present invention.

[0017] Description of the drawings: 1. Battery pack body; 10. Controller; 11. Cooling medium storage tank; 110. First medium storage tank; 111. Second medium storage tank; 12. Battery module; 13. Temperature sensor; 15. Protective device; 151. T-frame; 1510. First medium pipe joint; 1511. Second medium pipe joint; 152. Cross frame; 1520. Slide; 1521. Screw rod; 1522. Servo motor; 153. Medium pipeline; 1530. Inner tube; 1531. Outer tube; 1532. First medium nozzle; 1533. Second medium nozzle; 154. Slide; 1541. Fitting part. DETAILED DESCRIPTION

[0018] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, and use. It should be understood that in all of these figures, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically represent the concepts and principles of the embodiments of the present disclosure, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present disclosure. Specific parts in specific drawings may be exaggerated to illustrate the relevant details or structures of the embodiments of the present disclosure.

[0019] Example 1 Reference Figure 1-6 :This embodiment provides a technical solution: a marine battery pack, comprising a battery pack body 1, in which a plurality of columns of battery modules 12 are fixedly installed, the battery pack body 1 is located between two adjacent columns of battery modules 12 with a gap, and a protective device 15 is installed in the gap, the protective device 15 comprises: a cross frame 152 installed along the gap direction between the battery modules 12 and a T frame 151 installed above the cross frame 152, wherein the horizontal part and the vertical part of the T frame 151 respectively cover the top and one side of the battery module 12, the T frame 151 can slide along the length direction of the cross frame 152, a protective medium pipeline 153 is installed below the horizontal part and outside the vertical part of the T frame 151, and a plurality of groups of medium spraying components are equidistantly installed on the protective medium pipeline 153; It should be noted that: the marine battery pack integrates the safety protection structure onto the protection device 15, and the protection device 15 is arranged in the gap between two adjacent columns of battery modules 12, and the protection device 15 can move along the direction of the gap, so as to reach various positions of each battery module 12 inside the battery pack, thereby realizing fixed-point protection inside the battery pack. Such a structural setting greatly reduces the safety protection pressure of the marine battery pack (compared with comprehensive spraying medium protection, it saves raw material costs), and at the same time, it can reduce the amount of cooling medium carried by the battery pack.

[0020] As a further description of the above technical solution: the protective medium pipeline 153 includes an inner tube 1530 and an outer tube 1531, wherein the inner tube 1530 is inserted into the interior of the outer tube 1531, and the medium spraying assembly includes a first medium nozzle 1532 and a second medium nozzle 1533, wherein the first medium nozzle 1532 and the second medium nozzle 1533 are both fixedly mounted on the outer tube 1531, and the first medium nozzle 1532 is connected to the interior of the outer tube 1531, and the second medium nozzle 1533 is connected to the interior of the inner tube 1530. It should be noted that the internal passages of the inner tube 1530 and the outer tube 1531 are independent of each other, so the cooling media in the inner tube 1530 and the outer tube 1531 will not interfere with each other.

[0021] Specifically, two groups of first medium pipe joints 1510 and two groups of second medium pipe joints 1511 are installed at the lower side of the T-frame 151, wherein the two groups of first medium pipe joints 1510 are respectively connected to the outer pipes 1531 on both sides of the T-frame 151, and the two groups of second medium pipe joints 1511 are connected to the inner pipes 1530 on both sides of the T-frame 151.

[0022] Specifically, the protection device 15 further includes a cooling medium storage tank 11, wherein the cooling medium storage tank 11 is installed outside the battery pack body 1, and a first medium storage tank 110 for storing a first medium and a second medium storage tank 111 for storing a second medium are arranged inside the cooling medium storage tank 11, and two sets of second medium pipe joints 1511 are connected to the second medium storage tank 111 through a medium hose, and two sets of first medium pipe joints 1510 are connected to the first medium storage tank 110 through a medium hose; It should be noted that: the first medium is a cooling medium, such as ammonia, freon, etc., and the second medium is a fire extinguishing medium, such as carbon dioxide, dry powder, etc., by designing two medium storage tanks (the first medium storage tank 110, the second medium storage tank 111), and two medium spraying pipelines (the inner tube 1530 and the outer tube 1531), so the protection device 15 can select appropriate medium protection according to the state inside the battery pack, so that the overall applicability of the device is stronger; and the two medium spraying pipelines (the inner tube 1530 and the outer tube 1531) in the device share a space of the outer tube 1531, that is, the inner tube 1530 is inserted inside the outer tube 1531, so the arrangement of the pipeline saves space, thereby reducing the internal space pressure of the battery pack; When the battery pack is in use, when the temperature of a battery module 12 at a certain position inside the battery pack body 1 exceeds a set threshold, the cross frame 152 can be moved to the battery module 12 exceeding the set temperature, and based on the temperature of the battery module 12, the protective device 15 selects a corresponding cooling medium for spraying, that is, when it is detected that the temperature of the battery module 12 is overheated but no open flame occurs, the first medium storage tank 110 is opened, and the first medium in the first medium storage tank 110 is sprayed by the first medium nozzle 1532 through the corresponding medium spraying pipeline to cool the battery module 12 at this position; when it is detected that the temperature of the battery module 12 is overheated and an open flame occurs, the second medium storage tank 111 is opened, and the second medium in the second medium storage tank 111 is sprayed by the second medium nozzle 1533 through the corresponding medium spraying pipeline to cool the battery module 12 at this position.

[0023] As a further description of the above technical solution: a slide 154 is fixedly installed at the bottom of the T-frame 151, and the slide 154 is slidably engaged on the cross frame 152. A slide groove 1520 is opened on the upper surface of the cross frame 152 along the length direction, and a clamping member 1541 is installed at the bottom of the slide 154, and the clamping member 1541 is slidably assembled in the slide groove 1520. Such a structural arrangement makes the slide 154 more stable when sliding, which can make the T-frame 151 more stable when moving.

[0024] Specifically, a servo motor 1522 is installed at one end of the cross frame 152, a screw rod 1521 is rotatably installed in the slide slot 1520 along the length direction, the output shaft of the servo motor 1522 is fixedly connected to one end of the cross frame 152, a screw nut adapted to the screw rod 1521 is embedded in the engaging member 1541, and the screw nut is screwed and sleeved with the screw rod 1521; It should be noted that when the servo motor 1522 is running, it drives the lead screw 1521 to rotate. Under the cooperation of the lead screw nut, the engaging member 1541 slides in the slide groove 1520, so that the T frame 151 slides along the length direction of the cross frame 152 to achieve fixed-point protection.

[0025] As a further description of the above technical solution: the protection device 15 also includes a temperature sensor 13 and a controller 10, wherein a plurality of temperature sensors 13 are provided, which are respectively installed in the battery pack body 1 at the corresponding positions of each battery module 12, and the controller 10 is installed on the outside of the battery pack body 1, the temperature sensor 13 is electrically connected to the controller 10, and the controller 10 is electrically connected to the first medium storage tank 110, the second medium storage tank 111 and the servo motor 1522, and the temperature sensor 13 can monitor the temperature information of each corresponding battery module 12 in real time and upload it to the controller 10.

[0026] Working principle: When the battery pack is in use, when the temperature of a battery module 12 at a certain position inside the battery pack body 1 exceeds a set threshold, the cross frame 152 can be moved to the battery module 12 that exceeds the set temperature, and then the cooling medium is fixed to the battery module 12 through the protective medium pipeline 153 through the medium spraying assembly, thereby achieving the effect of fixed-point safety protection.

[0027] Example 2 Reference Figure 7 : This embodiment provides a safety protection control system, which is applied to a marine battery pack, including a data acquisition module to collect temperature information of a battery module inside the marine battery pack; The data processing module processes and analyzes the temperature information of the battery module to determine whether the battery module is abnormal. If abnormal, it marks it as an abnormal battery module, calculates the abnormal rate of the abnormal battery module, and compares the abnormal rate with a preset abnormal rate threshold to determine the abnormal level of the abnormal battery module; The control module generates a first control instruction or a second control instruction according to the abnormal level of the abnormal battery module, and controls the protection device to perform a protection operation.

[0028] Specifically, the method for determining whether the battery module is abnormal includes: By time The temperature of the battery module is collected at the time interval of collection, which is recorded as , set the abnormal temperature threshold to ; The collected data is processed by the data processing module and For comparison, then: when , , Both greater than When the battery module is abnormal, , , Respectively , No. , No. The temperature of the battery module collected at time intervals, , The value of is an integer greater than 1; Methods for calculating the abnormal rate of abnormal battery modules include: when = hour, ; when > hour, ; when < hour, ; in, and are the temperature of the abnormal battery module and the temperature of the battery module adjacent to the abnormal battery module collected at the same time point, is the abnormal rate of abnormal battery modules, , , Respectively , No. , No. The temperature of the abnormal battery module collected at time intervals, , , Respectively , No. , No. The temperature of the battery module adjacent to the abnormal battery module collected at time intervals, is the time interval, is the influence weight of the temperature of the adjacent battery module on the abnormal battery module temperature; It should be noted that: The technical personnel in this field collect multiple groups of comprehensive parameters, set corresponding weight coefficients for each group of comprehensive parameters, substitute the set weight coefficients and the collected comprehensive parameters into the formula, screen the calculated weight coefficients and take the average, and obtain The value of .

[0029] Methods for determining the abnormal level of an abnormal battery module include: The preset abnormal rate threshold is , the collected data is processed by the data processing module and For comparison, then: when ≤ When , the abnormal level is determined to be level one; when > , the abnormality level is determined to be level 2.

[0030] Specifically, the control module generates a first control instruction or a second control instruction according to the abnormal level of the abnormal battery module, and controls the protection device to perform a protection operation as follows: When the abnormality level is level one, a first control instruction is generated to spray a first medium onto the abnormal battery module; When the abnormality level is level two, a second control instruction is generated to spray a second medium onto the abnormal battery module.

[0031] Working principle: When the safety protection control system is used, the data acquisition module can The temperature of the battery modules inside the battery pack is continuously collected at intervals. When the temperature of a battery module exceeds the set threshold and continues When the temperature of the battery module exceeds the set temperature, it indicates that the battery module has been over-temperature for an abnormal period of time, and the battery module is determined to be an abnormal battery module. At this time, the data processing module can combine the temperatures of the battery modules adjacent to the abnormal battery module, calculate the abnormal rate of the abnormal battery module, and comprehensively judge the abnormal level of the abnormal battery module based on the abnormal rate. Finally, the control module can select a suitable cooling medium to cool the battery according to the actual abnormal level, which can greatly improve the overall service life of the battery pack (different cooling media have different effects on the internal structure of the battery pack. Generally, media that can cool faster will cause greater corrosion to the internal structure of the battery pack). Therefore, selecting a suitable cooling medium can effectively improve the service life of the battery pack.

[0032] The exemplary implementation scheme of the present disclosure is described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present disclosure, various modifications and variations can be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present disclosure can be combined in various ways without exceeding the protection scope of the present disclosure, which is determined by the attached claims.

Claims

1. A marine battery pack, comprising a battery pack body (1), wherein a plurality of rows of battery modules (12) are fixedly mounted in the battery pack body (1), characterized in that: The battery pack body (1) is located between two adjacent rows of battery modules (12) and has a gap, and a protective device (15) is installed in the gap; The protective device (15) comprises: a horizontal frame (152) installed along the gap direction between the battery modules (12) and a T frame (151) installed above the horizontal frame (152), wherein the horizontal portion and the vertical portion of the T frame (151) respectively cover the top and one side of the battery module (12), and the T frame (151) can slide along the length direction of the horizontal frame (152), and protective medium pipelines (153) are installed below the horizontal portion and outside the vertical portion of the T frame (151), and multiple groups of medium spraying components are equidistantly installed on the protective medium pipelines (153).

2. A marine battery pack according to claim 1, characterized in that: The protective medium pipeline (153) comprises an inner tube (1530) and an outer tube (1531), wherein the inner tube (1530) is inserted into the interior of the outer tube (1531); The medium spraying assembly comprises a first medium nozzle (1532) and a second medium nozzle (1533), wherein the first medium nozzle (1532) and the second medium nozzle (1533) are both fixedly mounted on the outer tube (1531), and the first medium nozzle (1532) is connected to the interior of the outer tube (1531), and the second medium nozzle (1533) is connected to the interior of the inner tube (1530).

3. A marine battery pack according to claim 2, characterized in that: Two groups of first medium pipe joints (1510) and two groups of second medium pipe joints (1511) are installed below one side of the T-frame (151), wherein the two groups of first medium pipe joints (1510) are respectively connected to the outer pipes (1531) on both sides of the T-frame (151), and the two groups of second medium pipe joints (1511) are connected to the inner pipes (1530) on both sides of the T-frame (151).

4. A marine battery pack according to claim 3, characterized in that: The protection device (15) further comprises a cooling medium storage tank (11), wherein the cooling medium storage tank (11) is mounted on the outside of the battery pack body (1), and a first medium storage tank (110) for storing a first medium and a second medium storage tank (111) for storing a second medium are arranged inside the cooling medium storage tank (11), two sets of second medium pipe joints (1511) are connected to the second medium storage tank (111) via a medium hose, and two sets of first medium pipe joints (1510) are connected to the first medium storage tank (110) via a medium hose.

5. A marine battery pack according to claim 4, characterized in that: A slide seat (154) is fixedly mounted on the bottom of the T-frame (151), and the slide seat (154) is slidably engaged with the cross frame (152). A slide groove (1520) is provided on the upper surface of the cross frame (152) along the length direction. A locking member (1541) is mounted on the bottom of the slide seat (154), and the locking member (1541) is slidably assembled in the slide groove (1520).

6. A marine battery pack according to claim 5, characterized in that: A servo motor (1522) is installed at one end of the cross frame (152), a lead screw (1521) is rotatably installed in the slide groove (1520) along the length direction, an output shaft of the servo motor (1522) is fixedly connected to one end of the cross frame (152), a lead screw nut adapted to the lead screw (1521) is embedded in the engaging member (1541), and the lead screw nut is screwed and sleeved with the lead screw (1521).

7. A marine battery pack according to claim 6, characterized in that: The protection device (15) further comprises a temperature sensor (13) and a controller (10), wherein a plurality of the temperature sensors (13) are provided and are installed inside the battery pack body (1) at corresponding positions of each battery module (12), and the controller (10) is installed outside the battery pack body (1), the temperature sensor (13) is electrically connected to the controller (10), and the controller (10) is electrically connected to the first medium storage tank (110), the second medium storage tank (111) and the servo motor (1522).

8. A safety protection control system, applied to the marine battery pack according to claim 7, characterized in that: include: Data acquisition module, collecting temperature information of battery modules inside the marine battery pack; The data processing module processes and analyzes the temperature information of the battery module to determine whether the battery module is abnormal. If abnormal, it marks it as an abnormal battery module, calculates the abnormal rate of the abnormal battery module, and compares the abnormal rate with a preset abnormal rate threshold to determine the abnormal level of the abnormal battery module; The control module generates a first control instruction or a second control instruction according to the abnormal level of the abnormal battery module, and controls the protection device to perform a protection operation.

9. A safety protection control system according to claim 8, characterized in that: The method for determining whether the battery module is abnormal includes: By time The temperature of the battery module is collected at the time interval of collection, which is recorded as , set the abnormal temperature threshold to ; The collected and For comparison, then: when , , Both greater than When the battery module is abnormal, , , Respectively , No. , No. The temperature of the battery module collected at time intervals, , The value of is an integer greater than 1; Methods for calculating the abnormal rate of abnormal battery modules include: when = hour, ; when > hour, ； when < hour, ； in, and are the temperature of the abnormal battery module and the temperature of the battery module adjacent to the abnormal battery module collected at the same time point, is the abnormal rate of abnormal battery modules, , , Respectively , No. , No. The temperature of the abnormal battery module collected at time intervals, , , Respectively , No. , No. The temperature of the battery module adjacent to the abnormal battery module collected at time intervals, is the time interval, is the influence weight of the temperature of the adjacent battery module on the abnormal battery module temperature; Methods for determining the abnormal level of an abnormal battery module include: The preset abnormal rate threshold is , the collected data is processed by the data processing module and For comparison, then: when ≤ When , the abnormal level is determined to be level one; when > , the abnormality level is determined to be level 2.

10. A safety protection control system according to claim 9, characterized in that: The control module generates a first control instruction or a second control instruction according to the abnormal level of the abnormal battery module, and controls the protection device to perform a protection operation as follows: When the abnormality level is level one, a first control instruction is generated to spray a first medium onto the abnormal battery module; When the abnormality level is level two, a second control instruction is generated to spray a second medium onto the abnormal battery module.

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