CN115397101A

CN115397101A - FPC structure, pencil division board subassembly, battery module and battery package

Info

Publication number: CN115397101A
Application number: CN202211138184.9A
Authority: CN
Inventors: 黄红光; 曾勇; 曾维权
Original assignee: GAC Aion New Energy Automobile Co Ltd
Current assignee: GAC Aion New Energy Automobile Co Ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2022-11-25

Abstract

The application provides a FPC structure, pencil division board subassembly, battery module and battery package relates to power battery technical field. The FPC structure includes: the battery comprises an FPC body, a pin body and a sensing body, wherein the pin body is configured to be connected with the FPC body, the sensing body is connected with the FPC body, the sensing body and the pin body are arranged at an interval, and at least one part of the sensing body extends to an explosion-proof valve of a battery monomer. The induction body and the pin body are connected to the FPC body, the pin body is used for being welded with the bus bar structure, the bus bar is connected with the positive and negative poles of the battery monomer, the induction body corresponds to the position of the explosion-proof valve of the battery monomer, when the battery monomer is out of control due to heat, the explosion-proof valve is opened, and after the induction body senses high temperature, the FPC structure can transmit the high-temperature signal to the battery management system and send an alarm to improve the safety of a product.

Description

FPC structure, pencil division board subassembly, battery module and battery package

Technical Field

The application relates to the technical field of power batteries, in particular to an FPC structure, a wiring harness isolation board assembly, a battery module and a battery pack.

Background

Under the pressure of energy crisis and environmental pollution problems, safety, environmental protection and energy conservation become the subjects of current automobile development, and electric automobiles receive high attention from traffic and energy departments due to the advantages of energy conservation, environmental protection and no pollution; in recent years, the new energy automobile industry has been increased explosively; the battery is used as a power core of the electric vehicle and is a very important part of the whole electric vehicle, a battery system of one electric vehicle is often composed of hundreds of battery monomers in a series-parallel connection mode and the like, and the reliability of a connection scheme among the battery monomers is related to the safety of the whole vehicle.

With the standardized development of the industry, the design of the battery pack is developed towards the standardization direction, and the parts of the battery pack are also designed towards the integrated direction; the energy conservation and emission reduction are the key of the sustainable development of the automobile industry, the electric automobile becomes an important component of the sustainable development of the automobile industry due to the advantages of energy conservation and environmental protection, and for the electric automobile, the battery technology is an important factor related to the development of the electric automobile.

In addition to improving the energy density of the battery, the safety of the battery is a considerable problem in the development and summarization of battery technology; therefore, how to improve the safety of the battery is a technical problem which needs to be solved urgently in the battery technology.

Disclosure of Invention

An object of this application provides a FPC structure, pencil division board subassembly, battery module and battery package, is favorable to improving the security of product.

In order to achieve the purpose, the following technical scheme is adopted in the application:

in a first aspect, the present application provides a FPC structure comprising: the battery comprises an FPC body, a pin body and a sensing body, wherein the pin body is configured to be connected with the FPC body, the sensing body is arranged at intervals with the pin body, and at least one part of the structure of the sensing body extends to the explosion-proof valve of a battery monomer.

In the process of realizing the anti-explosion device, the induction body and the pin body are connected to the FPC body, the pin body is used for being welded with the bus bar structure, the bus bar is connected with the positive electrode and the negative electrode of the battery monomer, the induction body is located corresponding to the position of the anti-explosion valve of the battery monomer, so that the anti-explosion valve of the battery monomer is opened when the battery monomer is out of control due to heat, and after the induction body senses high temperature, the FPC structure can transmit the high-temperature signal to the battery management system and send out an alarm, and the safety of a product is improved.

In some embodiments, the sensing body includes an extension member and a sensing member, one end of the extension member is configured to be connected to the FPC body, and the other end of the extension member is configured with the sensing member.

In the process of realizing, the extending part is respectively connected with the sensing part and the FPC body and can fix the sensing part, so that the position of the explosion-proof valve of the battery monomer corresponds to the sensing part, the monitoring of the battery monomer is realized, and when the thermal runaway of the battery monomer is ensured, a signal can be timely transmitted to a battery management system, so that an alarm is generated.

In some embodiments, the extending member is provided with a bending portion, the bending portion extends to the outer side of the explosion-proof valve, and the sensing member is arranged on the bending portion. By arranging a part of the structure of the extension piece as a bent part, the space of the battery shell can be fully utilized, and the energy density of the product is improved.

In some embodiments, the pin body includes a first pin and a second pin, the first pin is disposed on one side of the FPC body, the second pin is disposed on the other side of the FPC body, and a plurality of the first pin and the second pin are disposed along the length direction of the FPC body.

In the process of realizing, the first pin and the second pin are both provided with a plurality of pins which are respectively welded with the busbar structure, so that the information of the battery can be acquired, and the monitoring of the battery management system on the battery can be facilitated.

In some embodiments, the second lead is disposed on a side of the FPC body close to the sensor body, and a length of the second lead is smaller than a length of the sensor body.

At the in-process of above-mentioned realization, through the length setting that will respond to the body to be greater than the length of second pin for when first pin and second pin weld with the busbar structure, the response body can extend to free one side of battery, and correspond with explosion-proof valve, and when its assurance battery case space make full use of, also can monitor free thermal runaway of battery.

In a second aspect, the present application also provides a wire harness spacer assembly, including: the bus bar structure is used for welding with the battery monomer; and the FPC structure comprises a pin body and a bus bar structure, wherein the pin body of the FPC structure is configured to be welded with one side of the bus bar structure far away from the battery cell so as to collect information of the battery.

In some embodiments, the bus bar structure includes a first bus bar and a second bus bar, the first bus bar and the second bus bar are disposed at the upper end of the battery cell, and the first bus bar is soldered to the first pin of the FPC structure, and the second bus bar is soldered to the second pin of the FPC structure.

In the process of the realization, the first bus bar and the second bus bar are arranged at the upper end of the battery monomer, and the explosion-proof valve is arranged at one side of the battery monomer, so that the explosion-proof valve is far away from the anode and the cathode of the battery monomer, and when the battery monomer is out of control, the heat transfer between the battery monomers can be reduced, and the product risk is further reduced.

In a third aspect, the present application further provides a battery module, including: a plurality of battery cells; the battery shell is provided with a containing cavity which is configured to contain a plurality of battery units; and a harness isolation plate assembly as in any above, the harness isolation plate assembly being disposed in the receiving cavity.

In some embodiments, the battery housing includes a housing body portion and an upper cover body, one side of the housing body portion close to the explosion-proof valve of the battery cell is provided with an avoiding opening, the avoiding opening is used for accommodating at least a part of a structure of the induction body of the wiring harness isolation board assembly, and the upper cover body is configured at the upper end of the housing body portion to form the accommodating cavity in an enclosing manner.

In the in-process of above-mentioned realization, the casing this portion is close to one side of explosion-proof valve and is provided with dodges the mouth, should dodge the mouth and can be used to hold the structure of at least partly of response body for when battery monomer takes place the thermal runaway, the hot gas flow that its produced spouts to should dodge the mouth through the explosion-proof valve, dodges the mouth and can dredge the hot gas flow, thereby reduces the risk of thermal runaway.

In some embodiments, the battery case further includes an explosion-proof structure, and the explosion-proof structure is disposed on one side of the case body, so that when the explosion-proof valve of the battery cell ejects hot air, the hot air passes through the avoiding opening and then is ejected from the explosion-proof structure.

At the in-process of above-mentioned realization, be provided with blast resistant construction on the casing this part, this blast resistant construction can spout the hot gas flow of dodging mouthful and dredging to the outside that holds the chamber to reduce the risk of thermal runaway, improve the security of product.

In a fourth aspect, the present application further provides a battery pack including the battery module as set forth in any one of the above.

Because the battery pack provided in the fourth aspect of the present application includes the battery module described in the technical solution of the third aspect, all technical effects of the above embodiments are achieved, and are not described herein again.

Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for a user of ordinary skill in the art, other related drawings can be obtained according to the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of an FPC structure disclosed in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of connection between a wiring harness isolation board assembly and a battery cell according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure.

Fig. 4 is an exploded view illustrating a battery module according to an embodiment of the present disclosure.

Fig. 5 is a sectional view of a battery module according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a battery case of a battery module disclosed in an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a battery cell of a battery module disclosed in an embodiment of the present application.

Reference numerals

100. An FPC structure; 101. a sensing member; 102. an extension member; 103. a first pin; 104. a second pin; 105. an FPC body; 200. a first bus bar; 201. a second bus bar; 300. a battery cell; 301. an explosion-proof valve; 302. a positive electrode; 303. a negative electrode; 400. a battery case; 401. a housing base; 4011. avoiding the mouth; 4012. an explosion-proof structure; 402. and an upper cover body.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a user of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally placed when the products of the present invention are used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case to a user of ordinary skill in the art.

Examples

A lithium ion battery is a rechargeable battery that mainly relies on lithium ions moving between a positive electrode and a negative electrode to operate; during charging, lithium ions are extracted from the positive electrode of the battery and are inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true at discharge. In recent years, pure electric vehicles become an important development direction of electric vehicles by really realizing zero emission, and lithium ion batteries become an ideal power source of a new generation of electric vehicles by virtue of excellent performance of the lithium ion batteries.

However, during the thermal runaway of the lithium ion battery, combustible mixed gas such as H2, CO or CH4 is generated and accumulated inside the battery. After the lithium ion battery reaches a certain pressure limit, the safety valve is flushed by the combustible mixed gas and released to the external environment along with the burst of the battery. In the process of battery eruption, the surface temperature of the lithium ion battery can reach about 1000 ℃ at most, the internal temperature of the lithium ion battery cell is higher, and the surface temperature of the lithium ion battery cell is about 600-1200 ℃ along with sparks. Since the high temperature surface and spark temperature of the lithium ion battery are much higher than the ignition temperature of the gaseous propellant, once the gaseous propellant is sprayed in the air and contacts with oxygen, the ignition phenomenon is very easy to occur and a fire disaster is caused. In addition, even if the gaseous eruption generated after the lithium ion battery erupts does not catch fire, if a certain amount of the gaseous eruption is accumulated gradually, the explosion phenomenon may occur, and the harmfulness is greater.

The inventor finds that the thermal runaway problem of the power battery is the most troublesome problem in the industry of new energy automobiles at present, how to timely detect the electric core with the thermal runaway when the thermal runaway occurs in the power battery is of great importance to the life safety of people on a vehicle, however, the current thermal runaway detection means mainly depends on the change judgment of the thermal runaway voltage, and the voltage change of the electric core is not obvious at the initial stage of the thermal runaway occurrence of the electric core, so that the electric core has certain hysteresis.

In view of this, as shown in fig. 1, in a first aspect, the present application provides an FPC structure 100, the FPC structure 100 including: the battery comprises an FPC body 105, a pin body and an induction body, wherein the pin body is configured to be connected with the FPC body 105, the induction body is connected with the FPC body 105, the induction body and the pin body are arranged at intervals, and at least one part of the induction body extends to the explosion-proof valve 301 of the battery cell 300.

Exemplarily, the pin body is used for welding with a busbar structure, the induction body is connected with an FPC body 105 (Flexible Printed Circuit, FPC) and can be used for inducing the temperature of the explosion-proof valve 301, when the battery cell 300 is in thermal runaway or other uncontrollable conditions, a large amount of heat is generated inside the battery case, the explosion-proof valve 301 explodes, the liquid is sprayed out from the explosion-proof valve 301 due to fire inside the battery cell 300 or gas of high-temperature electrolyte, and at this time, the induction body can transmit a signal to the battery management system after sensing high temperature, so that accurate thermal runaway state information is obtained, and then the battery management system gives an alarm. It can be understood that, in order to ensure that accurate thermal runaway state information is achieved, the sensing body is arranged at the explosion-proof valve 301 of each battery cell 300.

In the process of realizing the above, the response body and the pin body are all connected on the FPC body 105, the pin body is used for welding with the busbar structure, the busbar is connected with the positive and negative electrodes 303 of the single battery 300, the response body corresponds to the position of the explosion-proof valve 301 of the single battery 300, when the single battery 300 is out of control due to heat, the explosion-proof valve 301 is opened, after the response body senses high temperature, the FPC structure 100 can transmit the high-temperature signal to the battery management system, and an alarm is given out, so that the safety of the product is improved.

Referring to fig. 1 again, the sensing body includes an extending member 102 and a sensing member 101, one end of the extending member 102 is configured to be connected to the FPC body 105, and the other end of the extending member 102 is configured with the sensing member 101. Illustratively, the sensing member 101 includes, but is not limited to, a thermistor, and the extending member 102 is made of a metal material, such as copper, aluminum, or tin, which is capable of transmitting a signal sensed by the sensing member 101 to the FPC body 105 and finally to the battery management system.

In the process of above-mentioned realization, extension 102 is connected with response 101 and FPC body 105 respectively, can fix response 101 for the explosion-proof valve 301 position department of battery monomer 300 corresponds this response 101, realizes the monitoring to battery monomer 300, when guaranteeing that battery monomer 300 takes place the thermal runaway, can in time give battery management system with signal transmission, thereby takes place the police dispatch newspaper.

In some embodiments, the extending member 102 is provided with a bent portion, the bent portion extends to the outer side of the explosion-proof valve 301, and the sensing member 101 is disposed on the bent portion. By providing a part of the extension 102 as a bent portion, the space of the battery case can be fully utilized, and the energy density of the product can be improved.

For example, the extending member 102 is bent to form the bent portion, and the bending angle of the extending member 102 is not particularly limited, and may be 90 °, 100 °, or 120 °, and may be set according to the space of the battery case in practice.

It can be understood that, in order to ensure the safety of the battery cell 300, the positive electrode 302 and the negative electrode 303 of the battery cell 300 may be both disposed at the upper end, the explosion-proof valve 301 is disposed at the left end or the right end of the battery cell 300, and the bent portion may extend to the left end or the right end of the battery cell 300, so that the sensing element 101 corresponds to the explosion-proof valve 301, and when the explosion-proof valve 301 sprays hot air, the sensing element 101 may feed back a signal to the battery management system at the first time, thereby improving the safety of the product.

In some embodiments, the lead body includes a first lead 103 and a second lead 104, the first lead 103 is disposed on one side of the FPC body 105, the second lead 104 is disposed on the other side of the FPC body 105, and a plurality of the first lead 103 and the second lead 104 are disposed along the length direction of the FPC body 105.

In the process of the above implementation, the first pin 103 and the second pin 104 are both provided with a plurality of pins, and are respectively welded to the busbar structure, so that information acquisition of the single battery 300 can be realized, and monitoring of the single battery 300 by a battery management system is facilitated.

In some embodiments, the second leads 104 are disposed on a side of the FPC body 105 close to the sensor body, and the length of the second leads 104 is smaller than the length of the sensor body.

In the process of the realization, the length of the induction body is set to be larger than that of the second pin 104, so that when the first pin 103 and the second pin 104 are welded with the busbar structure, the induction body can extend to one side of the single battery 300 and correspond to the explosion-proof valve 301, and the thermal runaway of the single battery 300 can be monitored while the space of the battery shell is fully utilized.

As shown in fig. 2, in a second aspect, the present application also provides a wire harness insulation board assembly, including: a bus bar structure for welding with the battery cell 300; and the FPC structure 100 as described in any one of the above, the pin body of the FPC structure 100 is configured to be soldered to a side of the bus bar structure away from the battery cell 300, so as to collect information of the battery.

In some embodiments, the bus bar structure includes a first bus bar 200 and a second bus bar 201, the first bus bar 200 and the second bus bar 201 are disposed at the upper ends of the battery cells 300, the first bus bar 200 is soldered to the first pins 103 of the FPC structure 100, and the second bus bar 201 is soldered to the second pins 104 of the FPC structure 100. For example, the first bus bar 200 may be used to connect with one of the positive electrode 302 and the negative electrode 303 of the battery cell 300, the second bus bar 201 is used to connect with the other, and in order to satisfy a large overcurrent capacity, the lengths of the positive electrode 302 and the negative electrode 303 of the battery cell 300 are set to be as long as possible, and specific lengths thereof may be set according to the length of the battery cell 300, and accordingly, the lengths of the first bus bar 200 and the second bus bar 201 may also be set to be long, thereby also achieving a quick charging requirement of a product.

In the implementation process, the first bus bar 200 and the second bus bar 201 are disposed at the upper end of the battery cell 300, and the explosion-proof valve 301 is disposed at one side of the battery cell 300, so that the explosion-proof valve 301 is far away from the positive electrode 302 and the negative electrode 303 of the battery cell 300, and when the battery cell 300 is in thermal runaway, heat transfer between the battery cells 300 can be reduced, and product risk is reduced.

As shown in fig. 3 to 7, in a third aspect, the present application further provides a battery module, including: a plurality of battery cells 300; a battery housing having a receiving cavity configured to receive the plurality of battery cells 300; and the wiring harness baffle component is configured in the accommodating cavity.

Illustratively, the length direction of the battery cells 300 is configured to be distributed along the left-right direction, and several battery cells 300 are distributed along the front-back direction, the upper end of the battery cell 300 is provided with a positive electrode 302 and a negative electrode 303, and the bus bar structure of the wire harness isolation plate assembly is used for forming a series connection, a parallel connection, a series-parallel connection or the like of two adjacent battery cells 300.

As shown in fig. 5-6, battery case includes casing part 401 and upper cover 402, casing part 401 is close to one side of explosion-proof valve 301 of battery cell 300 is provided with dodges mouth 4011, dodge mouth 4011 and be used for holding the structure of at least part of the response body of pencil division board subassembly, upper cover 402 dispose in the upper end of casing part 401 to enclose and close the formation hold the chamber.

For example, one side of the housing base 401 close to the explosion-proof valve 301 is recessed, so that a side plate of the housing base 401 forms a step shape (i.e., the escape opening 4011), and a flow space can be reserved for a hot air flow ejected from the explosion-proof valve 301, thereby channeling the hot air flow.

In the in-process of above-mentioned realization, the casing is this 401 is provided with the mouth 4011 of dodging near one side of explosion-proof valve 301, should dodge mouthful 4011 and can be used to hold the at least partly structure of response body for when battery monomer 300 takes place the thermal runaway, the hot gas flow of its production spouts to should dodge mouthful 4011 through explosion-proof valve 301, dodges mouthful 4011 and can dredge the hot gas flow, thereby reduces the risk of thermal runaway.

Referring to fig. 6 again, the battery housing further includes an explosion-proof structure 4012, and the explosion-proof structure 4012 is disposed on one side of the housing base 401, so that when the explosion-proof valve 301 of the single battery 300 sprays hot air, the hot air flows out of the explosion-proof structure 4012 after passing through the avoiding opening 4011. Exemplarily, explosion-proof structure 4012 can set up in the front end or the rear end of casing part 401, work as when explosion-proof valve 301 blowout hot gas flow, the hot gas flow can pass through the curb plate of casing part 401 reflects, and then passes through it dredges to dodge mouth 4011 explosion-proof structure 4012 department reduces the thermal runaway risk.

At the in-process of above-mentioned realization, be provided with explosion-proof structure 4012 on casing part 401, this explosion-proof structure 4012 can spout the hot gas flow of dodging mouth 4011 and dredging to the outside that holds the chamber to reduce thermal runaway's risk, improve the security of product.

In a fourth aspect, the present application further provides a battery pack including the battery module as described above. It can be understood that, the battery package can include at least one the battery module, just when being provided with one the battery module, the structure of battery module is promptly the structure of battery package, wherein the battery package can be used to supply power to consumer, for example is used for consumer's operating power supply etc, the consumer can be electronic toy, electric tool, storage battery car, electric automobile and spacecraft etc. when the consumer is the vehicle, the vehicle can be for fuel automobile, gas automobile or new energy automobile, and new energy automobile can be pure electric automobile, hybrid vehicle or extended range car etc.. The interior of the vehicle is provided with a battery pack, which may be arranged at the bottom or at the head or tail of the vehicle.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An FPC structure, characterized in that, FPC structure includes: the battery comprises an FPC body, a pin body and an induction body, wherein the pin body is configured to be connected with the FPC body, the induction body is arranged at an interval with the pin body, and at least one part of the induction body extends to the explosion-proof valve of the battery.

2. The FPC structure of claim 1, wherein the sensing body comprises an extension and a sensing element, one end of the extension is configured to be connected with the FPC body, and the other end of the extension is configured with the sensing element.

3. The FPC structure of claim 2, wherein the extending member is provided with a bent portion, the bent portion extends to an outer side of the explosion-proof valve, and the sensing member is disposed on the bent portion.

4. The FPC structure of claim 2, wherein the lead body comprises a first lead and a second lead, the first lead is disposed on one side of the FPC body, the second lead is disposed on the other side of the FPC body, and the first lead and the second lead are disposed in several numbers along the length direction of the FPC body.

5. The FPC structure of claim 4, wherein the second lead is disposed on a side of the FPC body close to the sensor body, and a length of the second lead is smaller than a length of the sensor body.

6. A wire harness spacer assembly, comprising:

the bus bar structure is used for welding with the battery monomer; and

the FPC structure of any one of claims 1-5, wherein a pin body of the FPC structure is configured to be soldered to a side of the bus bar structure away from the battery cells for collecting information of the battery.

7. The wire harness spacer assembly of claim 6, wherein the bus bar structure comprises a first bus bar and a second bus bar, the first bus bar and the second bus bar are disposed at the upper end of the battery cell, and the first bus bar is soldered to the first pin of the FPC structure, and the second bus bar is soldered to the second pin of the FPC structure.

8. A battery module, comprising:

a plurality of battery cells;

the battery shell is provided with a containing cavity which is configured to contain a plurality of battery units; and

the harness bulkhead assembly of any of claims 6-7, the harness bulkhead assembly being disposed in the receiving cavity.

9. The battery module according to claim 8, wherein the battery housing comprises a housing body and an upper cover, an avoiding opening is provided at one side of the housing body close to the explosion-proof valve of the battery cell, the avoiding opening is used for accommodating at least a part of the structure of the sensing body of the wiring harness isolation plate assembly, and the upper cover is configured at the upper end of the housing body to form the accommodating cavity in an enclosing manner.

10. The battery module according to claim 9, wherein the battery case further includes an explosion-proof structure disposed at one side of the case body, so that when the explosion-proof valve of the battery cell ejects a hot air flow, the hot air flow passes through the escape opening and then is ejected from the explosion-proof structure.

11. A battery pack comprising the battery module according to any one of claims 8 to 10.