CN102519689A - Water leakage detection device of valve tower of converter valve - Google Patents
Water leakage detection device of valve tower of converter valve Download PDFInfo
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- CN102519689A CN102519689A CN2011103876381A CN201110387638A CN102519689A CN 102519689 A CN102519689 A CN 102519689A CN 2011103876381 A CN2011103876381 A CN 2011103876381A CN 201110387638 A CN201110387638 A CN 201110387638A CN 102519689 A CN102519689 A CN 102519689A
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Abstract
The invention discloses a water leakage detection device of a valve tower of a converter valve. The water leakage detection device comprises a water leakage collection tray, wherein the upper surface of the water leakage collection tray is provided with a water leakage collection place; a water leakage detection cylinder is fixed at the collection place of the water leakage collection tray; a water inlet is arranged on the water leakage detection cylinder; two light transmitting optical cables and two light receiving optical cables are respectively and correspondingly fixed at two sides of the water leakage detection cylinder; a floating block is arranged in the water leakage detection cylinder; a baffle for blocking optical signals from the light transmitting optical cables is fixed on the upper end face of the floating block; two holes, namely a first long hole and a second long hole, respectively for the optical signals of the two light transmitting optical cables to pass through, are arranged at the upper end part of the baffle; and lower edges of the first long hole and the second long hole are used for moving to respective corresponding optical cables successively in the raising process of the floating block. The water leakage detection device disclosed by the invention is capable of accurately detecting different water leakage conditions of the valve tower, thus, the operation of the valve tower can be effectively protected.
Description
Technical field
The present invention relates to a kind of leakage inspector of converter valve tower.
Background technology
The converter valve tower is owing to be equipped with water circuit system; Water circuit system can cause the damage of valve tower components and parts when leaking; And the decline of water-cooled efficient can cause the radiating effect of whole valve tower appliance component to descend; Therefore leakage inspector is installed on the valve tower is used for detecting the situation of leaking, thereby realize protection the operation of valve tower.
Traditional valve tower detection design mode of leaking is directly to be sidelong at one of valve tower bottom radome to put the detection probe of leaking; Probe end is fixed a facet mirror; Whether the probe other end connects optical cable, and is luminous through optical cable, detect the valve tower through flat mirror reflects again and leak.There is following drawback in this detection mode of leaking, first: because probe is exposed in the air, the time has been grown, and probe is assembled dust and covered the reflective plane mirror, and the light that the optical cable of popping one's head in like this sends just can't reflect back, and is easy to cause the situation of leaking of reporting by mistake; Second: as long as the situation of leaking occurs, whether the tube leakage situation is not serious, and testing result has only a kind of, promptly can not cause backstage control can not monitor very accurately the valve tower situation of leaking along with the situation report various signals of leaking.
Summary of the invention
The purpose of this invention is to provide a kind of leakage inspector that can accurately detect the different situation of leaking of valve tower, can only detect the problem of whether leaking in order to solve existing leakage inspector.
The present invention adopts following technical scheme: a kind of converter valve tower leakage inspector; Comprise the catch tray that leaks; Leak to have on the upper surface of catch tray and be used to compile the junction that leak of leakage on the catch tray upper surface that leaks; The junction of catch tray of leaking is fixed with leaking of open upper end and detects tube; Leak and offer the inlet opening that leaks and get into that supplies junction on the sidewall that detects tube; Leak detect tube both sides respectively correspondence be fixed with two light emission optical cables and two light-receiving optical cables; Two light emission optical cables and two corresponding one by one settings of light-receiving optical cable, leaking to detect to be provided with in the tube is used for the floating block that rises with buoyancy of water, be fixed with on the upper surface of said floating block detect along leaking that the tube axial direction extends be used to block baffle plate from the light signal of light emission optical cable; The upper end of said baffle plate offer two vertically extend be used for first slotted hole and second slotted hole that supply the light signal of two light emission optical cables to pass through respectively, the lower edge of first slotted hole and second slotted hole is used for successively moving to each self-corresponding optical cable place in the floating block uphill process.
The below that is positioned at the inlet opening on the said sidewall that detects tube that leaks offers metering orifice, and the upper limb of metering orifice and the distance between the bottom interior wall that detects tube of leaking equal the lower edge of second slotted hole and the distance at the optical cable center corresponding with it.
Said two light emission optical cable and two light-receiving optical cables are fixed on the detection tube that leaks through being fixed on the said optical cable mount pad that detects on the tube that leaks; Offer on the said optical cable mount pad and the said baffle plate spacing pilot hole that cooperates that slides; And offer two axis normal on the optical cable mount pad in the mounting hole of said baffle plate; Two mounting holes respectively with the corresponding one by one setting of two slotted holes of said baffle plate, and the two ends of two mounting holes cooperate with said light emission optical cable and the inserting of light-receiving cable ends respectively.
Said two mounting holes all are divided into two that are positioned at the pilot hole both sides by said pilot hole, and the top that is positioned at each mounting hole on the said optical cable mount pad all is installed with end and is used for the lock-screw that cooperates with each self-corresponding light emission optical cable or light-receiving optical cable roof pressure.
The said catch tray that leaks is a V-type groove structure, and the junction of the catch tray that leaks is the bottom land of V-type groove.
Said inlet opening is to be distributed in two that are arranged symmetrically in the surge drum both sides that leak.
Adopt the leakage inspector of said structure; The catch tray that leaks is installed in the radome, just in time be positioned at the valve tower under, can cover leaking of whole valve tower; And the catch tray that leaks has and is used for junction that leaking of each several part compiled; Be provided with the surge drum that leaks at junction, focus in the surge drum that leaks, guaranteed the accuracy that detects through this junction leaking of can guaranteeing farthest will to collect.The both sides of detecting tube that leak are fixed with two light emission optical cables and two light-receiving optical cables respectively; Two light emission optical cables and two corresponding one by one settings of light-receiving optical cable, the light signal that is sent by light emission optical cable is like this received by each self-corresponding light-receiving optical cable respectively.Leak and be provided with the floating block that rises with the buoyancy that leaks in the surge drum; Be fixed with baffle plate on the floating block; Baffle plate is along with floating block constantly rises according to the situation of leaking of collecting in the surge drum that leaks; And offer first slotted hole and second slotted hole that supply two light signals to pass respectively on the baffle plate, the lower edge of first slotted hole and second slotted hole is used for successively moving to each self-corresponding optical cable place in the floating block uphill process.When the valve tower situation of leaking do not occur or leaks more after a little while, the motionless or rising certain altitude of baffle plate makes two light signals all can pass through each self-corresponding slotted hole; When situation that the valve tower leaks makes in the baffle plate uphill process; Light signal can only pass through second slotted hole, and this process there is not influence to the operation of valve tower, through sending alerting signal; The running background personnel note the situation of leaking constantly, for running background personnel's normal running gains time; When the valve tower continues to leak, baffle plate continue to rise make two light signals all can not through the time, this moment is influential to the operation of valve tower, through sending trip signal, the influence of protecting all components and parts of whole valve tower not leaked.Therefore, this leakage inspector can accurately detect the different situation of leaking of valve tower, thus the effectively operation of protective valve tower.
The below that is positioned at the inlet opening on the said sidewall that detects tube that leaks also offers metering orifice, gets into leaking and can discharge from metering orifice in the detection tube that leaks by the inlet opening, because it is relevant with the flow that leaks of valve tower to get into the flow of inlet water of the detection tube that leaks.When flow sent alerting signal simultaneously less than a certain numerical value if leak, to not influence of valve tower operation, the drain discharge of metering orifice leaked and can flow out from metering orifice always greater than the flow of inlet water of inlet opening; Flow is during greater than a certain numerical value if leak, and the drain discharge of metering orifice is during less than the flow of inlet water of inlet opening, and leaking to cover metering orifice.And the upper limb of metering orifice and the distance between the bottom interior wall that detects tube of leaking equal the lower edge of second slotted hole and the distance at the optical cable center corresponding with it; Promptly leaking when overflowing to the metering orifice upper limb; The lower edge of second slotted hole rises to the optical cable position corresponding with it, sends trip signal this moment.Therefore, confirm metering orifice, can guarantee when the flow that leaks of valve tower is unlikely to influence the operation of valve tower, trip signal not occur, the valve tower is worked on through the flow that leaks of valve tower.
In addition, termination and the termination of light-receiving optical cable of detecting the light emission optical cable of usefulness can be installed in the mounting hole of optical cable mount pad, can avoid because of the wrong report that dust the causes situation of leaking.
Description of drawings
Fig. 1 is the assembling synoptic diagram of leakage inspector of the present invention;
Fig. 2 detects the scheme of installation of tube for leaking among Fig. 1;
Fig. 3 is the scheme of installation of the floating block among Fig. 1;
Fig. 4 is the scheme of installation of the baffle plate among Fig. 1.
Embodiment
The embodiment of a kind of converter valve tower of the present invention leakage inspector: shown in Fig. 1-4; This device is used to be installed in radome 1 inboard under the valve tower, comprises the catch tray 4 that leaks, leaks and detect tube 5 and floating block 8, leaks to detect tube 5 and be fixed on and be used to collect leaking of valve tower on the catch tray 4 that leaks; And leak and detect the open upper end of tube 5; Floating block 8 is positioned to leak and detects tube 5, and the material of floating block 8 is a foam, can detect collections in the tube 5 situation rising different height of leaking along with leaking.In order to guarantee that leaking of valve tower farthest is pooled in the detection tube 5 that leaks; The said catch tray 4 that leaks is covered with radome 1; And the catch tray 4 of leaking is V-type groove structure, and said leaking detected tube 5 to be arranged in the bottom land place and the welding of V-type groove fixing, on the sidewall that detects tube 5 that leaks, offers two inlet openings 6 of running through the barrel that detects tube 5 of leaking; All the bottom land with the V-type groove is corresponding in two inlet openings 6, has guaranteed to leak can flow into immediately to leak to detect in the tube 5.Said floating block 8 is a column structure; Be fixed with the baffle plate 3 that extends along floating block 8 axial directions on the upper surface of floating block 8; The upper end of baffle plate 3 offers two first slotted hole 9 and second slotted holes 10 that vertically extend; The length of second slotted hole 10 is greater than the length of first slotted hole 9, and first slotted hole 9 is concordant with the upper limb of second slotted hole 10, and the lower edge of such second slotted hole 10 is lower than the lower edge of first slotted hole 9.During concrete the installation; Two light emission optical cables are fixed on a side of baffle plate 3; Two light-receiving optical cables are fixed on the opposite side of baffle plate 3; And the termination that makes two light emission optical cables respectively with the corresponding one by one setting in the termination of two light-receiving optical cables; Such two light-receiving optical cables can receive the light signal that each self-corresponding light emission optical cable sends, and the center of optical cable termination all is positioned at the upper limb position of corresponding slotted hole separately simultaneously, and light signal can pass through each self-corresponding first slotted hole 9 and second slotted hole 10 respectively.
Leak and detect tube 5 in the process that collection valve tower leaks; Floating block 8 is along with the situation of collecting of leaking constantly rises; When floating block 8 rose to certain altitude, the lower edge of first slotted hole 9 was positioned at position, the termination of corresponding optical cable with it, and blocked by baffle plate 3 with the light signal that first slotted hole, 9 corresponding light emission optical cables send this moment; Have only with the corresponding light-receiving optical cable in second long 10 holes to receive light signal, send alerting signal this moment; When floating block 8 rises certain altitude again; The lower edge of second slotted hole 10 is positioned at the optical cable termination position corresponding with it; The light signal that sends of two light emissions this moment optical cable is all blocked by baffle plate 3, and two light-receiving optical cables all do not receive light signal, send trip signal this moment.
Be positioned on the sidewall that detects tube 5 that leaks the inlet opening below offer metering orifice; Getting into leaking in the detection tube 5 by the inlet opening can flow out from metering orifice when rising to the metering orifice position; Because the flow of inlet water that getting into leaks detects tube 5 is relevant with the flow that leaks of valve tower; And the flow that leaks of valve tower is uncertain, when the valve tower leaks flow during less than a certain numerical value, to the not influence of operation of valve tower; The drain discharge of metering orifice leaks and detects the lower edge position that the tube 5 interior waters surface are in metering orifice always greater than the flow of inlet water of inlet opening at this moment; When the valve tower leaks flow during greater than a certain numerical value, the operation of valve tower is affected, and the drain discharge of metering orifice is during less than the flow of inlet water of inlet opening, and the waters surface that detect in the tube 5 that leak can cover metering orifice.In order to make the valve tower flow that leaks not influence its normal operation during less than a certain numerical value; The upper limb of metering orifice and the distance between the bottom interior wall that detects tube 5 of leaking equal the lower edge of second slotted hole 10 and the distance between the center, optical cable termination corresponding with it; Just floating block 8 is in uphill process; When the bottom surface of floating block 8 is positioned at the upper limb position of metering orifice, move to the optical cable position corresponding on the lower edge of second slotted hole 10 with it, this moment, two light-receiving optical cables all can not receive signal.
The installation of light emission optical cable and light-receiving optical cable for ease, the said open upper end place of detecting tube 5 that leaks is fixed with optical cable mount pad 2, simultaneously in order not influence the rising of baffle plate 3; Offer the pilot hole that supplies baffle plate 3 to pass on the optical cable mount pad 2; Baffle plate 3 offers two axis normal in the mounting hole of baffle plate 3 along with the rising of floating block 8 and optical cable mount pad 2 slide spacing cooperations on the side end face of said optical cable mount pad 2, and two mounting holes and two corresponding one by one settings of slotted hole; Said two mounting holes are through hole; Therefore, each mounting hole is directed to the hole again and is divided into two, and the top that is positioned at each mounting hole on the upper surface of said optical cable mount pad 2 is installed with lock-screw 7; The end of lock-screw 7 stretches into respectively in each self-corresponding mounting hole; The termination of two light emission optical cables is inserted into respectively in the mounting hole of pilot hole one side, and the termination of two light-receiving optical cables is inserted into respectively in the mounting hole of pilot hole opposite side, and through lock-screw 7 each optical cable is fixed.
In the foregoing description, first slotted hole 9 is concordant with the upper limb of second slotted hole 10, and the lower edge of second slotted hole 10 is lower than the lower edge of first slotted hole 9; And the termination of optical cable all is positioned at the upper limb position of corresponding slotted hole separately; Just when a certain amount of leaking appears in the valve tower, the lower edge that rises to first slotted hole 9 when floating block 8 is positioned at the optical cable termination position corresponding with it and just sends alerting signal, and the operation of valve tower was unaffected when just leaking on a small quantity appearred in the valve tower; Also be unlikely to send alerting signal; Certainly in other embodiments, the optical cable termination corresponding with first slotted hole also can be positioned at the lower edge position of first slotted hole, as long as the valve tower can send alerting signal once leaking; And first slotted hole do not need concordant with the upper limb of second slotted hole yet; As long as guarantee in floating block 8 uphill process, quilt is blocked and is got final product behind the light signal that the light that light signal is blocked earlier, second slotted hole is corresponding emission optical cable that the light emission optical cable of first slotted hole correspondence sends sends.
In other embodiments, also metering orifice can be set, just, also can send trip signal when the flow that leaks of valve tower during less than a certain numerical value.
In the foregoing description; The said catch tray that leaks is a V-type groove structure, and the bottom land of V-type groove has formed the junction of the catch tray that leaks, in other embodiments; The catch tray that leaks also can be the diminishing shape structure that contracts from top to bottom, and the lower end of the shape structure that contracts has formed the junction of the catch tray that leaks.
The foregoing description is when concrete work; When having drainage, the valve tower can not leak more after a little while; Be that floating block is in original state; The light signal that is installed in two light emission optical cables of optical cable mount pad 2 one sides this moment can receive through two slotted holes on the baffle plate 3 and by each self-corresponding two light-receiving optical cable, representes that the valve tower is a normal condition at this moment; When the valve tower continues to leak; And the flow that leaks is during less than a certain numerical value; Leak and detect the lower edge position that the tube 5 interior waters surface that leak can be positioned at metering orifice always; Along with the rising of floating block 8, have only the light signal of the light emission optical cable corresponding to be received by its corresponding light-receiving optical cable with second slotted hole 10, produce alerting signal this moment; And when the flow that leaks during greater than a certain numerical value; Detection tube 5 interior the leaking of leaking can cover metering orifice; The bottom surface of floating block 8 rises to the upper limb position of metering orifice, and the light signal of two light emissions this moment optical cable all can't be received by two light-receiving optical cables, just produces trip signal this moment.
Claims (6)
1. converter valve tower leakage inspector; It is characterized in that: comprise the catch tray that leaks; Leak to have on the upper surface of catch tray and be used to compile the junction that leak of leakage on the catch tray upper surface that leaks; The junction of catch tray of leaking is fixed with leaking of open upper end and detects tube; Leak and offer the inlet opening that leaks and get into that supplies junction on the sidewall that detects tube; Leak detect tube both sides respectively correspondence be fixed with two light emission optical cables and two light-receiving optical cables; Two light emission optical cables and two corresponding one by one settings of light-receiving optical cable, leaking to detect to be provided with in the tube is used for the floating block that rises with buoyancy of water, be fixed with on the upper surface of said floating block detect along leaking that the tube axial direction extends be used to block baffle plate from the light signal of light emission optical cable; The upper end of said baffle plate offer two vertically extend be used for first slotted hole and second slotted hole that supply the light signal of two light emission optical cables to pass through respectively, the lower edge of first slotted hole and second slotted hole is used for successively moving to each self-corresponding optical cable place in the floating block uphill process.
2. converter valve tower leakage inspector according to claim 1; It is characterized in that: the below that is positioned at the inlet opening on the said sidewall that detects tube that leaks offers metering orifice, and the upper limb of metering orifice and the distance between the bottom interior wall that detects tube of leaking equal the lower edge of second slotted hole and the distance at the optical cable center corresponding with it.
3. converter valve tower leakage inspector according to claim 1 and 2; It is characterized in that: said two light emission optical cable and two light-receiving optical cables are fixed on the detection tube that leaks through being fixed on the said optical cable mount pad that detects on the tube that leaks; Offer on the said optical cable mount pad and the said baffle plate spacing pilot hole that cooperates that slides; And offer two axis normal on the optical cable mount pad in the mounting hole of said baffle plate; Two mounting holes respectively with the corresponding one by one setting of two slotted holes of said baffle plate, and the two ends of two mounting holes cooperate with said light emission optical cable and the inserting of light-receiving cable ends respectively.
4. converter valve tower leakage inspector according to claim 3; It is characterized in that: said two mounting holes all are divided into two that are positioned at the pilot hole both sides by said pilot hole, and the top that is positioned at each mounting hole on the said optical cable mount pad all is installed with end and is used for the lock-screw that cooperates with each self-corresponding light emission optical cable or light-receiving optical cable roof pressure.
5. converter valve tower leakage inspector according to claim 1 is characterized in that: the said catch tray that leaks is a V-type groove structure, and the junction of the catch tray that leaks is the bottom land of V-type groove.
6. converter valve tower leakage inspector according to claim 1 is characterized in that: said inlet opening is to be distributed in two that are arranged symmetrically in the surge drum both sides that leak.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110387638.1A CN102519689B (en) | 2011-11-30 | 2011-11-30 | Water leakage detection device of valve tower of converter valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110387638.1A CN102519689B (en) | 2011-11-30 | 2011-11-30 | Water leakage detection device of valve tower of converter valve |
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| CN102519689A true CN102519689A (en) | 2012-06-27 |
| CN102519689B CN102519689B (en) | 2015-03-04 |
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| CN201110387638.1A Active CN102519689B (en) | 2011-11-30 | 2011-11-30 | Water leakage detection device of valve tower of converter valve |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009651A (en) * | 2014-05-30 | 2014-08-27 | 许继电气股份有限公司 | Converter valve tower and valve hall with converter valve tower |
| CN104296952A (en) * | 2014-09-28 | 2015-01-21 | 许继电气股份有限公司 | Direct-current transmission converter valve tower and water leakage detection system thereof |
| CN105352679A (en) * | 2015-10-15 | 2016-02-24 | 国网智能电网研究院 | Fiber-type water leakage detection device |
| CN106644290A (en) * | 2015-07-28 | 2017-05-10 | 南京南瑞继保电气有限公司 | Valve tower water leakage detector based on refraction principle |
| CN106706217A (en) * | 2015-07-15 | 2017-05-24 | 南京南瑞继保电气有限公司 | Water leakage detection device for high-voltage converter |
| CN107567269A (en) * | 2017-08-16 | 2018-01-09 | 扬州市美华电气有限公司 | A kind of bottom radome assembly |
| CN107817072A (en) * | 2016-09-13 | 2018-03-20 | 南京南瑞继保电气有限公司 | A kind of high-voltage commutation valve valve tower leakage inspector |
| CN108489679A (en) * | 2018-03-15 | 2018-09-04 | 中国西电电气股份有限公司 | A kind of extra-high voltage direct-current transmission converter valve leakage inspector and its detection method |
| CN110307940A (en) * | 2019-06-21 | 2019-10-08 | 许继集团有限公司 | Converter valve valve tower and its leakage inspector |
| CN111766019A (en) * | 2020-06-29 | 2020-10-13 | 广州小鹏汽车科技有限公司 | Battery module, vehicle, detection method, and storage medium |
| CN112781795A (en) * | 2019-11-07 | 2021-05-11 | 许继集团有限公司 | Water leakage detection device for converter valve |
| CN113131759A (en) * | 2020-01-15 | 2021-07-16 | 许继集团有限公司 | Converter valve tower |
| CN113125092A (en) * | 2019-12-31 | 2021-07-16 | 中国南方电网有限责任公司超高压输电公司 | Water leakage detection device and system |
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| CN104009651A (en) * | 2014-05-30 | 2014-08-27 | 许继电气股份有限公司 | Converter valve tower and valve hall with converter valve tower |
| WO2015180350A1 (en) * | 2014-05-30 | 2015-12-03 | 许继电气股份有限公司 | Converter valve tower and valve hall using converter valve tower |
| CN104296952A (en) * | 2014-09-28 | 2015-01-21 | 许继电气股份有限公司 | Direct-current transmission converter valve tower and water leakage detection system thereof |
| CN106706217A (en) * | 2015-07-15 | 2017-05-24 | 南京南瑞继保电气有限公司 | Water leakage detection device for high-voltage converter |
| CN106644290A (en) * | 2015-07-28 | 2017-05-10 | 南京南瑞继保电气有限公司 | Valve tower water leakage detector based on refraction principle |
| CN105352679A (en) * | 2015-10-15 | 2016-02-24 | 国网智能电网研究院 | Fiber-type water leakage detection device |
| CN105352679B (en) * | 2015-10-15 | 2019-01-04 | 国家电网公司 | A kind of optical fiber type leakage inspector |
| WO2018050057A1 (en) * | 2016-09-13 | 2018-03-22 | 南京南瑞继保电气有限公司 | Device for detecting water leakage of valve tower of high-pressure converter valve |
| CN107817072A (en) * | 2016-09-13 | 2018-03-20 | 南京南瑞继保电气有限公司 | A kind of high-voltage commutation valve valve tower leakage inspector |
| CN107817072B (en) * | 2016-09-13 | 2024-06-18 | 南京南瑞继保电气有限公司 | Water leakage detection device for valve tower of high-pressure converter valve |
| CN107567269A (en) * | 2017-08-16 | 2018-01-09 | 扬州市美华电气有限公司 | A kind of bottom radome assembly |
| WO2019033580A1 (en) * | 2017-08-16 | 2019-02-21 | 扬州市美华电气有限公司 | Assembling assembly of bottom shielding case |
| CN107567269B (en) * | 2017-08-16 | 2023-04-28 | 扬州市美华电气有限公司 | Bottom shielding cover assembly |
| CN108489679A (en) * | 2018-03-15 | 2018-09-04 | 中国西电电气股份有限公司 | A kind of extra-high voltage direct-current transmission converter valve leakage inspector and its detection method |
| CN110307940A (en) * | 2019-06-21 | 2019-10-08 | 许继集团有限公司 | Converter valve valve tower and its leakage inspector |
| CN112781795A (en) * | 2019-11-07 | 2021-05-11 | 许继集团有限公司 | Water leakage detection device for converter valve |
| CN113125092A (en) * | 2019-12-31 | 2021-07-16 | 中国南方电网有限责任公司超高压输电公司 | Water leakage detection device and system |
| CN113131759A (en) * | 2020-01-15 | 2021-07-16 | 许继集团有限公司 | Converter valve tower |
| CN111766019A (en) * | 2020-06-29 | 2020-10-13 | 广州小鹏汽车科技有限公司 | Battery module, vehicle, detection method, and storage medium |
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