CN113067087A

CN113067087A - Battery pack and vehicle with same

Info

Publication number: CN113067087A
Application number: CN201911416163.7A
Authority: CN
Inventors: 张成军; 公绪斌; 周燕飞; 陈耀磊
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-07-02
Anticipated expiration: 2039-12-31
Also published as: CN113067087B

Abstract

The invention discloses a battery pack and a vehicle with the battery pack. The battery pack provided by the invention is simple in structure and convenient to assemble.

Description

Battery pack and vehicle with same

Technical Field

The invention relates to the technical field of batteries, in particular to a battery pack and a vehicle with the same.

Background

In the related art, a battery pack for a vehicle such as an electric vehicle mainly includes a case and a battery module mounted in the case, the battery module being assembled from a plurality of unit batteries.

However, such a battery pack has the following problems: 1. the power output of the battery pack and the output of the sampling information need to be sequentially and respectively assembled, so that the battery pack is complicated to assemble, and the waste of the internal space of the shell is easily caused; 2. because the battery package equipment is loaded down with trivial details, in the assembling process, easily produce the defective products, and because the equipment number of times is more, the battery package is easy not hard up, the installation is insecure, leads to battery package stability not good enough, the reliability reduces.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a battery pack which is simple in structure and convenient to assemble.

The invention also provides a vehicle with the battery pack.

A battery pack according to a first aspect of the invention includes: the device comprises a shell, a power connecting end and an information connecting end, wherein an installation cavity is defined in the shell, and the wall of the installation cavity is provided with the power connecting end and the information connecting end; the battery, the battery install in the installation cavity, the battery has electrode terminal and sampling terminal, electrode terminal with power connection end cooperation and electricity are connected, sampling terminal with information connection end cooperation and electricity are connected.

According to the battery pack, the power connecting end and the information connecting end are arranged on the wall of the mounting cavity, so that the power connecting end is matched and electrically connected with the electrode terminal of the battery, and the information connecting end is matched and electrically connected with the sampling terminal of the battery, the structure of the battery pack is simplified, and the battery pack is convenient to assemble.

In some embodiments, the electrode terminal and the sampling terminal are located on the same side end face of the cell.

In some embodiments, the battery pack further comprises: coupling assembling, coupling assembling includes first connecting piece and second connecting piece, first connecting piece is established on the casing, the second connecting piece is established on the battery, first connecting piece with the cooperation of second connecting piece, so that the electrode terminal with the power link electricity is connected, just the sampling terminal with the information link electricity is connected.

In some embodiments, the first connector and the second connector are magnetically engaged.

In some embodiments, at least one of the first and second connections is formed as a magnetic loop surrounding the electrode terminal and the sampling terminal.

In some embodiments, the first connecting member is fixed to the housing through a first insulating rubber gasket, and the second connecting member is fixed to the battery through a second insulating rubber gasket.

In some embodiments, the housing comprises: the shell body is internally provided with the installation cavity, the side wall of the shell body is internally embedded with the information connecting end and the power connecting end, and the information connecting end and the power connecting end are arranged at intervals; and the shell cover is arranged at the end part of the shell body so as to seal the mounting cavity.

In some embodiments, the battery comprises: the sampling device comprises a shell, a sampling terminal and a sampling module, wherein a plurality of sampling lines are arranged in the shell and are electrically connected with the sampling terminal; the multiple pole core groups are arranged in the shell, each pole core group comprises at least one pole core, and is in series connection with the multiple pole core groups, and the multiple pole core groups are respectively in corresponding electrical connection with the multiple sampling lines.

In some embodiments, a plurality of insulating film bags are further arranged in the shell, and the plurality of insulating film bags wrap the plurality of pole core groups in a one-to-one correspondence manner.

A vehicle according to a second aspect of the invention includes the battery pack according to the above first aspect of the invention.

According to the vehicle provided by the invention, the battery pack of the first aspect is arranged, so that the structure of the vehicle is simplified, and the assembly efficiency of the vehicle is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic diagram of a battery pack according to an embodiment of the present invention;

fig. 2 is another schematic view of the battery pack shown in fig. 1;

fig. 3 is a cross-sectional view of the battery pack of fig. 2 taken along a-a;

FIG. 4 is an enlarged view of portion B circled in FIG. 3;

FIG. 5 is a schematic diagram of a battery according to one embodiment of the present invention;

FIG. 6 is a schematic illustration of a vehicle according to one embodiment of the present invention.

Reference numerals:

a vehicle 200,

A battery pack 100, a vehicle body 101,

A shell 1, a mounting cavity 10, an opening 10a, a cavity wall 10b,

A shell body 11, a side wall 111,

A case cover 12, a pressing part 121,

A fastener 14,

A battery 2,

An electrode terminal 211, a positive electrode terminal 2111, a negative electrode terminal 2112,

A sampling terminal 212,

A shell 213,

Pole core group 214, pole core 2141,

A sampling line 215,

The connecting component 3, the magnetic ring 30, the cavity 30a, the first connecting piece 31, the second connecting piece 32,

A power connection end 41, an information connection end 42,

A first insulating rubber pad 51 and a second insulating rubber pad 52.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

Next, a battery pack 100 according to an embodiment of the first aspect of the invention is described with reference to the drawings.

As shown in fig. 1-4, the battery pack 100 includes a housing 1 and a battery 2, a mounting cavity 10 is defined in the housing 1, a power connection end 41 and an information connection end 42 are disposed on a cavity wall 10b of the mounting cavity 10, the battery 2 is mounted in the mounting cavity 10, the battery 2 has an electrode terminal 211 and a sampling terminal 212, the electrode terminal 211 is mated with the power connection end 41, the electrode terminal 211 is electrically connected with the power connection end 41 to implement transmission of electric energy of the battery 2, the sampling terminal 212 is mated with the information connection end 42, and the sampling terminal 212 is electrically connected with the information connection end 42 to implement transmission of relevant collected information (e.g., temperature information, voltage information, etc.) of the battery 2.

For example, the electrode terminal 211 is used for outputting the electric power of the battery 2, and the power connection terminal 41 is electrically connected with the electrode terminal 211 and is used for leading out the electric power of the battery 2 to realize the transmission of electric energy, so that the external circuit can normally operate; the sampling terminal 212 is used for outputting the relevant collected information (for example, at least one of voltage information, temperature information, and the like) of the battery 2, and the information connection terminal 42 is electrically connected to the sampling terminal 212 and is used for leading out the relevant collected information of the battery 2, so as to realize transmission of the relevant data information of the battery 2 and facilitate realization of information interaction between the battery 2 and other components.

It should be noted that "the electrode terminal 211 is matched with the power connection end 41" and "the sampling terminal 212 is matched with the information connection end 42" are to be understood in a broad sense, and may include a contact fit or other fit that does not achieve connection, and may also include a limit fit or an insertion fit that achieves connection; in other words, the above "engagement" can be understood as a direct engagement relationship between the first feature and the second feature, and the first feature and the second feature can be disengaged from each other, i.e. the first feature and the second feature can be detachably engaged with each other. The "limit fit" may be understood as an interaction force generated between the first feature and the second feature, that is, the first feature directly generates an action force on the second feature to limit the second feature, so as to achieve the limit effect, for example, the first feature and the second feature may be magnetically engaged, or screwed.

It can be understood that, because the power connection end 41 and the information connection end 42 are arranged on the cavity wall 10b of the installation cavity 10, the position arrangement of the power connection end 41 and the information connection end 42 has good flexibility, so as to adapt to different batteries 2, and facilitate the realization that when the batteries 2 are installed in the installation cavity 10, the electrode terminal 211 is naturally matched with the power connection end 41, and the sampling terminal 212 is naturally matched with the information connection end 42, which is beneficial to simplifying the assembly of the battery pack 100. That is, the power output of the battery 2 and the output of the sampling information are realized while the installation of the battery 2 is completed by one operation, and compared with the prior art, the structural design can simplify the operation process, thereby being beneficial to reducing the cost.

According to the battery pack 100 provided by the embodiment of the invention, the power connecting end 41 and the information connecting end 42 are arranged on the cavity wall 10b of the installation cavity 10, so that the power connecting end 41 is matched and electrically connected with the electrode terminal 211 of the battery 2, and the information connecting end 42 is matched and electrically connected with the sampling terminal 212 of the battery 2, the installation of the electrode terminal 1 and the sampling terminal 212 of the battery 2 is simplified, the structure of the battery pack 100 is simplified, and the assembly of the battery pack 100 is facilitated; for among the correlation technique, the electrode terminal of battery is fixed through bolt etc, and set up the sampling of gathering circuit and/or gathering circuit board etc. in order to realize battery information in the outside of every battery, can save connecting piece such as bolt and the outside collection circuit of battery in this application, gather circuit board etc., be convenient for simplify battery package 100's structure, be favorable to promoting the space utilization of installation cavity 10, be convenient for promote battery 2's energy density, the packaging efficiency of battery package 100 has further been promoted simultaneously, be convenient for guarantee battery package 100's equipment reliability.

In some embodiments, as shown in fig. 3 and 4, the electrode terminal 211 and the sampling terminal 212 are located on the same side end face of the battery 2, and the power connection end 41 and the information connection end 24 may be located on the same cavity wall 10b of the installation cavity 10, so that in the process of installing the battery 2 into the installation cavity 10, the electrode terminal 211 and the power connection end 41 can be matched conveniently, and the sampling terminal 212 and the information connection end 42 can be matched conveniently, and the matching of the electrode terminal 211 and the power connection end 41 and the matching of the sampling terminal 212 and the information connection end 42 can be realized together, which is beneficial to improving the assembly efficiency of the battery 2 and the housing 1.

For example, in the examples of fig. 3 and 5, the electrode terminal 211 and the sampling terminal 212 are both located on the bottom-side end face of the cell 2; of course, the electrode terminal 211 and the sampling terminal 212 may be located on the top end surface, the left end surface, the front end surface, or the like of the battery 2.

Of course, the present invention is not limited thereto; in other embodiments of the present invention, the electrode terminal 211 and the sampling terminal 212 may be located on different side end faces of the battery 2, for example, the electrode terminal 211 and the sampling terminal 212 may be located on opposite side end faces of the battery 2, and the power connection terminal 41 and the information connection terminal 42 may be located on different wall 10b of the installation cavity 10.

In some embodiments, as shown in fig. 4, the electrode terminal 211 includes a positive terminal 2111 and a negative terminal 2112, and the positive terminal 2111 and the negative terminal 2112 are respectively located at two sides of the sampling terminal 212, so that the positive terminal 2111 and the negative terminal 2112 are far apart from each other, and the battery 2 is prevented from being damaged due to short circuit easily between the positive terminal 2111 and the negative terminal 2112.

Optionally, the power connection end 41 electrically connected with the positive terminal 2111 is a first power connection end, the power connection end 41 electrically connected with the negative terminal 2112 is a second power connection end, the sizes of the first power connection end and the second power connection end are different, so that an identification effect can be achieved, a user can distinguish the first power connection end and the second power connection end more intuitively, and then the user can conveniently and respectively and rapidly correspond the positive terminal 2111 and the negative terminal 2112 to the first power connection end and the second power connection end, which is beneficial to improving the assembly efficiency of the battery 2 and the housing 1, and meanwhile, the user is prevented from being easily installed by mistake.

It should be noted that in the above description of the present invention, "the size of the first power connection end" may refer to a single size or a plurality of sizes of the first power connection end, in other words, "the size of the first power connection end" may refer to the entire size or a partial size of the first power connection end. Thus, the first and second power connection ends are of different sizes, which may include the following: 1. the specific structure of the first power connecting end is different from that of the second power connecting end; 2. the first power link end and the second power link end have the same structure and different structural sizes, namely, the first power link end and the second power link end have different structural sizes.

It will be appreciated that the first and second power connection ends may also be identically sized to simplify the design of the battery pack 100.

In some embodiments, as shown in fig. 4, at least one of the power connection end 41 and the information connection end 42 is embedded in the housing 1 so as to simplify the processing of the housing 1. For example, in the example of fig. 4, the power connection end 4 and the information connection end 42 are both embedded in the housing 1, at least a portion of the power connection end 41 is embedded in the housing 1, and at least a portion of the information connection end 42 is embedded in the housing 1, so as to ensure the installation reliability of the power connection end 41 and the information connection end 42, and meanwhile, no through hole needs to be formed in the housing 1 for arranging the power connection end 41 and the information connection end 42, which is beneficial to simplifying the processing procedure of the housing 1 and reducing the cost. For example, in the example of fig. 4, the power connection end 41 and the information connection end 42 are both integrally embedded within the housing 1.

In some embodiments, as shown in fig. 3 and 4, the battery pack 100 further includes a connection assembly 3, the connection assembly 3 includes a first connection member 31 and a second connection member 32, the first connection member 31 is disposed on the housing 1, the second connection member 32 is disposed on the battery 2, the first connection member 31 and the second connection member 32 are engaged to electrically connect the electrode terminal 211 with the power connection terminal 41, and the sampling terminal 212 with the information connection terminal 42. For example, the first connecting member 31 and the second connecting member 32 are coupled such that the electrode terminal 211 is coupled to the power connection terminal 41 and the sampling terminal 212 is coupled to the information connection terminal 42, thereby achieving electrical connection between the electrode terminal 211 and the power connection terminal 41 and electrical connection between the sampling terminal 212 and the information connection terminal 42.

It should be noted that "fit" in "the first connecting element 31 and the second connecting element 32 are matched and should be understood in a broad sense, and may include a fit which does not achieve connection, such as contact fit, and may also include a fit which achieves connection, such as limit fit, plug fit, and the like; in other words, the above "engagement" can be understood as a direct engagement relationship between the first feature and the second feature, and the first feature and the second feature can be disengaged from each other, i.e. the first feature and the second feature can be detachably engaged with each other. The "limit fit" may be understood as an interaction force generated between the first feature and the second feature, that is, the first feature directly generates an action force on the second feature to limit the second feature, so as to achieve the limit effect, for example, the first feature and the second feature may be magnetically engaged, or screwed.

When battery 2 is installed in installation cavity 10, so that first connecting piece 31 and second connecting piece 32 are in cooperation, electrode terminal 211 and power connection end 41 can cooperate naturally and be electrically connected, sampling terminal 212 and information connection end 42 can cooperate naturally and be electrically connected, simultaneously because first connecting piece 31 is established on casing 1, second connecting piece 32 is established on battery 2, then first connecting piece 31 and second connecting piece 32 cooperation are convenient for make battery 2 under self action of gravity and coupling assembling 3's effect, stable installation in installation cavity 10, thereby make things convenient for spacing, fixed of battery 2, the installation of battery 2 has been simplified, and then battery package 100 is in the use, good installation flexibility has, in order to use different application scenarios better, avoid battery 2 unstability to lead to battery package 100 mounting means limited.

In addition, for among the correlation technique, the battery passes through connecting pieces such as bolt and realizes fixing, can save connecting pieces such as bolt in this application, avoided setting up of this connecting piece to lead to the waste in installation cavity 10 space, battery package weight is great, the loaded down with trivial details scheduling problem of equipment to simplify battery package 100's structure, be convenient for promote the space utilization of installation cavity 10, be convenient for promote battery 2's energy density, simplify battery 2's installation, promote battery package 100's packaging efficiency.

In some embodiments, as shown in fig. 3 and 4, the first connector 31 and the second connector 32 are magnetically engaged, so that the first connector 31 and the second connector 32 can be quickly engaged and quickly disengaged. After the first connecting piece 31 is matched with the second connecting piece 32, magnetic attraction is generated between the first connecting piece 31 and the second connecting piece 32, so that the first connecting piece 31 and the second connecting piece 32 are attracted to each other, the limit matching of the first connecting piece 31 and the second connecting piece 32 is realized, the alignment of the first connecting piece 31 and the second connecting piece 32 is conveniently ensured, the matching precision of the first connecting piece 31 and the second connecting piece 32 is favorably improved, meanwhile, the first connecting piece 31 and the second connecting piece 32 are reliably matched, the battery 2 is stably installed in the installation cavity 10, the electrode terminal 211 is reliably matched with the power connecting end 41, and the sampling terminal 212 is reliably matched with the information connecting end 42; when the external force is greater than the magnetic attraction force between the first and

second connectors

31 and 32, the detachment of the battery 2 is facilitated.

From this, inhale the cooperation through coupling assembling 3 magnetism between battery 2 and the casing 1 in this application, can need not to set up bolted connection in order to link to each other battery 2 and casing 1, be favorable to simplifying the structure of battery package 100, simplify the installation of battery 2, promote the assembly efficiency of battery 2 and casing 1, be convenient for simultaneously with battery 2 and the separation of casing 1 for battery package 100 dismouting is nimble.

In addition, the magnetic attraction matching of the first connecting piece 31 and the second connecting piece 32 can simplify the structure of the first connecting piece 31 and the second connecting piece 32, and is beneficial to reducing the cost.

In some embodiments, as shown in fig. 4, at least one of the first connector 31 and the second connector 32 is formed as a magnetic ring 30, including the following cases: 1. the first connecting piece 31 is formed as a magnetic ring 30; 2. second connection 32 is formed as magnetic ring 30; 3. the first connection 31 and the second connection 32 are both formed as a magnetic ring 30. The magnetic ring 30 surrounds the electrode terminal 211 and the sampling terminal 212, when the first connecting piece 31 is in limit fit with the second connecting piece 32, at least part of the electrode terminal 211 can be located in the magnetic ring 30, and at least part of the sampling terminal 212 can be located in the magnetic ring 30, so that the magnetic ring 30 can play a role in protecting the electrode terminal 211 and the sampling terminal 212 to a certain extent, and the use reliability of the electrode terminal 211 and the sampling terminal 212 can be improved.

For example, in the example of fig. 4, the first connection member 31 and the second connection member 32 are each formed as the magnetic ring 30, the first connection member 31 is disposed around the electrode terminal 211 and the sampling terminal 212, and the second connection member 32 is disposed around the electrode terminal 211 and the sampling terminal 212, that is, the electrode terminal 211 and the sampling terminal 212 are each disposed within an inner ring of the first connection member 31, and the electrode terminal 211 and the sampling terminal 212 are each disposed within an inner ring of the second connection member 32; when the first connecting piece 31 is in limit fit with the second connecting piece 32, a cavity 30a can be naturally defined between the two magnetic rings 30, at least part of the electrode terminal 211 is arranged in the cavity 30a, and at least part of the sampling terminal 212 is arranged in the cavity 30 a. The cavity 30a may be formed as a chamber having a certain sealing performance, the cavity 30a may be sealed by a magnetic attraction between the first connecting member 31 and the second connecting member 32, and since the magnetic ring 30 surrounds the electrode terminal 211 and the sampling terminal 212, the electrode terminal 211 and the sampling terminal 212 may be sealed in the cavity 30a, thereby realizing a local sealing of the battery pack 100, and the sealing surface is small, which is beneficial to saving materials and ensuring a sealing effect.

In some embodiments, as shown in fig. 4, the first connecting element 31 is fixed on the housing 1 through the first insulating rubber pad 51, and the second connecting element 32 is fixed on the battery 2 through the second insulating rubber pad 52, so that the first connecting element 31 can be adhered to the housing 1 through the first insulating rubber pad 51, and the second connecting element 32 can be adhered to the battery 2 through the second insulating rubber pad 52, so as to ensure the fixing strength of the first connecting element 31 and the second connecting element 32, and avoid the magnetic interference between the electrode terminal 211 and the power connection terminal 41, and the signal transmission between the sampling terminal 212 and the information connection terminal 41 of the first connecting element 31 and the second connecting element 32.

Of course, the arrangement of the first connecting member 31 and the second connecting member 32 is not limited to this, and it is only necessary to ensure that the first connecting member 31 is fixedly connected with the housing 1 and the second connecting member 32 is fixedly connected with the battery 2.

In some embodiments, as shown in fig. 3, the connecting assembly 3 is formed in a ring-shaped structure, and the electrode terminal 211 and the sampling terminal 212 are spaced inside the connecting assembly 3, that is, the electrode terminal 211 and the sampling terminal 212 are spaced inside an inner ring of the connecting assembly 3, so that the connecting assembly 3 can play a role of protecting the electrode terminal 211 and the sampling terminal 212 to some extent, and simultaneously, the normal output of signals of the electrode terminal 211 and the sampling terminal 212 is ensured, and the electrode terminal 211 and the sampling terminal 212 are prevented from being easily interfered. It will be appreciated that both the power connection 41 and the information connection 42 may be spaced within the connector assembly 3.

In some embodiments, as shown in fig. 3 and 4, the housing 1 includes a housing body 11 and a housing cover 12, the housing body 11 defines a mounting cavity 10 therein, and the housing cover 12 is disposed at an end of the housing body 11 to close the mounting cavity 10, so that the housing 1 is simple in structure and easy to process, and at the same time, facilitates mounting the battery 2 to the mounting cavity 10 from an open side of the mounting cavity 10.

Wherein, embedded information link 42 and power link 41 on the lateral wall 111 of shell body 11 to guarantee the installation reliability of information link 42 and power link 41, information link 42 sets up with power link 41 interval, avoids taking place to interfere between information link 42 and the power link 41, is favorable to simplifying the processing of cap 12 simultaneously.

It is understood that when housing 11 has multiple sidewalls 111, information connection end 42 and power connection end 41 may be embedded on the same sidewall 111 of housing 11 or may be embedded on different sidewalls 111 of housing 11.

Optionally, in the example of fig. 3 and 4, the top of the mounting cavity 10 is open to form an opening 10a, the information connection end 42 and the power connection end 41 are embedded in the bottom wall of the housing body 11, and the electrode terminal 211 and the sampling terminal 212 are located at the bottom end of the battery 2, so that the battery 2 can be mounted in the mounting cavity 10a through the opening 10a from top to bottom, so that when the first connection member 31 is mated with the second connection member 32, the electrical connection between the electrode terminal 211 and the power connection end 41 and the electrical connection between the sampling terminal 212 and the information connection end 42 are achieved, which is beneficial to improving the assembly efficiency of the battery 2 and the housing 1.

Alternatively, the number of the power connection terminals 41 is plural, and the plural power connection terminals 41 are electrically connected to the plural electrode terminals 211 of the battery 2 correspondingly.

Alternatively, in the example of fig. 3, the cover 12 is formed in a plate-like structure to save the amount of material used for the cover 12 and facilitate the processing of the cover 12.

Optionally, in the examples of fig. 1 to 4, the housing body 11 is made of an insulating plastic, and the housing cover 12 is made of an insulating plastic, so as to ensure the insulating effect of the housing 1, prevent the battery 2 from being interfered, and facilitate ensuring the normal operation of the battery 2.

Optionally, the housing 1 further includes a sealing member (not shown) sealed between the housing body 11 and the housing cover 12, and the sealing member is disposed around the opening 10a, which is beneficial to improve the sealing effect at the opening 10a, improve the waterproof and dustproof performance of the housing 1, and the like. Optionally, the sealing member is a sealing gasket or a sealant applied between the housing body 11 and the housing cover 12.

Of course, the present invention is not limited thereto; in other embodiments of the present invention, there may be no need to provide the sealing member 13 between the housing body 11 and the housing cover 12, for example, in the example of fig. 3 and 4, the first connecting member 31 and the second connecting member 32 are both formed as the magnetic ring 30, the magnetic ring 30 surrounds the electrode terminal 211 and the sampling terminal 212, and the first connecting member 31 and the second connecting member 32 are magnetically engaged, so that when the first connecting member 31 and the second connecting member 32 are in limit engagement, the electrode terminal 211 and the sampling terminal 212 may be sealed in the cavity 30a with a certain sealing property defined by the connecting member 3, the battery 2 and the housing, and there is no need to provide the sealing member 13 between the housing body 11 and the housing cover 12.

In some embodiments, as shown in fig. 3, a pressing portion 121 is formed on an inner wall of the housing cover 12, and when the housing cover 12 closes the mounting cavity 10, the pressing portion 121 abuts against the battery 2 to further limit the battery 2, and the first connecting member 31 is prevented from being separated from the second connecting member 32, so that the mounting stability of the battery 2 is improved.

In the example of fig. 3, the pressing portion 121 may be formed by a portion of the inner wall of the housing cover 12 protruding toward the center of the mounting cavity 10, when the housing cover 12 is connected to the housing body 11, the pressing portion 121 contacts the battery 2, and the pressing portion 121 may limit the position of the battery 2, so as to limit the movement of the battery 2 toward the direction close to the housing cover 12, so that the first connecting member 31 is separated from the second connecting member 32, thereby improving the reliability of limiting the position of the connecting member 3 on the battery 2. The specific structure of the pressing portion 121 is not limited in this regard, and it is only necessary to ensure that when the cover 12 covers the opening 10a, the pressing portion 121 stops against the battery 2 to prevent the first connecting member 31 from separating from the second connecting member 32.

In some embodiments, as shown in fig. 5, the battery 2 includes a housing 213 and a plurality of electrode-core groups 214, wherein a plurality of sampling lines 215 are disposed in the housing 213, the plurality of sampling lines 215 are electrically connected to the sampling terminal 212, the plurality of electrode-core groups 214 are disposed in the housing 213, the electrode-core groups 214 each include at least one electrode core 2141, the plurality of electrode-core groups 214 are connected in series, and the plurality of electrode-core groups 214 are electrically connected to the plurality of sampling lines 215 respectively. The pole core group 214 may be composed of a single pole core 2141, or may include a plurality of pole cores 2141; when the pole core set 214 includes a plurality of pole cores 2141, the plurality of pole cores 2141 may be connected in parallel.

It is understood that the number of pole cores 2141 of the plurality of pole core groups 214 may be the same or different.

From this, through set up a plurality of utmost point core group 214 series connection in shell 213, be favorable to promoting the output voltage of battery 2, realize the high voltage of battery 2, be favorable to promoting the capacity of battery 2 simultaneously to satisfy the demand of outer circuit better. Compared with the related art, in order to increase the capacity and voltage of the battery, the following problems exist in the arrangement mode of connecting a plurality of batteries in series: 1. the connection between two adjacent batteries connected in series needs to be in power connection through an additionally arranged power connecting piece, so that the installation structure of the whole battery is more, the cost is higher, the overall weight of the power battery pack is larger, 2, some installation structures such as the power connecting piece can occupy more internal space of the pack of the battery pack, so that the overall capacity of the power battery pack is reduced, and the arrangement of the batteries is not facilitated, 3, the internal resistance is increased due to the fact that the power connecting piece is arranged outside the battery to realize power connection, and the internal consumption of the power battery pack is larger; the setting of a plurality of utmost point core group 214 in shell 213 in this application can need not additionally to set up power connecting piece to promote battery 2's voltage and capacity, thereby be favorable to reduce cost, simplify battery package 100's manufacturing process, and reduce the internal consumption of battery package 100 in the use.

In addition, by providing a plurality of sampling lines 215 in the housing 213 and electrically connecting the plurality of sampling lines 215 to the plurality of electrode core groups 214, respectively, the plurality of sampling lines 215 can collect the related information (e.g., voltage information, temperature information, etc.) of the plurality of electrode core groups 214 and transmit the related information to the sampling terminal 212 to be output by the sampling terminal 212. For among the relevant art, adopt independent battery cell to establish ties and/or parallelly connected in order to form battery module or battery package, and sample every battery in the outside of every battery, establish a plurality of utmost point core group 214 in series in the shell 213 of battery 2 in this application, inconvenient or even unable monitoring each utmost point core group 214's operating condition in the outside of battery 2, then through set up a plurality of sampling lines 215 in shell 213, in order to sample every utmost point core group 214 in the shell 213, thereby monitor the state of every utmost point core group 214, ensure the safety and stability of battery 2, be convenient for simplify the assembly process of battery package 100 simultaneously, promote the packaging efficiency of battery package 100.

It can be understood that, after reading the above technical solutions, those skilled in the art can obviously understand the connection manner of the sampling line 215 to realize the function of the sampling line 215 for acquiring the relevant information of the pole core group 214; for example, in the example of fig. 5, three pole-core groups 214 are arranged in the outer shell 213, the three pole-core groups 214 may be arranged along the length direction of the outer shell 213 (e.g., the left-right direction in fig. 5), and the three pole-core groups 214 are connected in series, and four sampling lines 215 are arranged in the outer shell 213 to sample the pole-core groups 214.

It can be understood that the plurality of pole core groups 214 can be connected in series between adjacent pole core groups 214, at this time, the current leading-out components on the adjacent pole core groups 214 are directly connected, or the current leading-out components on the adjacent pole core groups 214 are electrically connected through an additionally arranged conductive component, in other words, two adjacent pole core groups 214 can be electrically connected directly or indirectly; of course, the series connection of the plurality of pole core groups 214 is not limited thereto.

Specifically, each of the electrode core groups 214 includes a first electrode lead-out member and a second electrode lead-out member for drawing out an electric current. When the number of the cores 2141 of the core group 214 is one, the first electrode lead-out member and the second electrode lead-out member may be a positive tab and a negative tab of the core group 2141, respectively, for example, the first electrode lead-out member is the positive tab, the second electrode lead-out member is the negative tab, or the first electrode lead-out member is the negative tab, and the second electrode lead-out member is the positive tab; when the pole core set 214 includes a plurality of pole cores 2141, the first electrode lead may be a lead formed by the positive ears of the plurality of pole cores 2141 being combined and welded together, the second electrode lead may be a lead formed by the negative ears of the plurality of pole cores 2141 being combined and welded together, or the first electrode lead may be a lead formed by the negative ears of the plurality of pole cores 2141 being combined and welded together, and the second electrode lead may be a lead formed by the positive ears of the plurality of pole cores 2141 being combined and welded together. Here, "first" and "second" of the first electrode lead-out member and the second electrode lead-out member are used only for name distinction and are not used for limiting the number.

In the present application, the first and second electrode lead-outs are provided at both sides of the electrode core group 214 in the length direction of the outer case 213 (e.g., the left-right direction in fig. 5).

It should be noted that "pole core 2141" described in this application is a pole core commonly used in the field of power batteries, and the pole core 2141 and the pole core group 214 are components inside the outer shell 213 of the battery 2, and cannot be understood as the battery 2 itself. The pole core 2141 may be formed by winding or lamination.

Generally, the core 2141 includes at least a positive electrode sheet, a separator, a negative electrode sheet, and an electrolyte, and the core 2141 generally refers to an incompletely sealed assembly. Thus, "battery 2" described herein is a single battery, and cannot be simply understood as a battery module or a battery pack because it includes a plurality of pole cores 2141. The battery 2 may be, for example, a lithium battery.

In some embodiments, as shown in fig. 5, a plurality of insulating film bags are further disposed in the outer shell 213, and the plurality of insulating film bags wrap the plurality of pole core groups 214 in a one-to-one correspondence manner, that is, each insulating film bag wraps one pole core group 24, so that the plurality of insulating film bags can separate the plurality of pole core groups 214, and one insulating film bag can be disposed outside each pole core group 214. From this, annotate notes electrolyte in every insulating film bag, can be so that do not share electrolyte between a plurality of utmost point core group 214, avoid utmost point core group 214 inside short circuit that appears, electrolyte can not decompose because of the potential difference yet simultaneously, is convenient for guarantee battery 2's service reliability and life.

The insulating film bag has certain electrical insulation and electrolyte corrosion resistance, and the material of the insulating film bag is not particularly limited herein, and it is sufficient to ensure that the insulating film bag is insulated and does not react with the electrolyte. For example, the insulating film pouch may be a polypropylene (PP) film, or a Polyethylene (PE) film.

Next, a vehicle 200 according to an embodiment of the second aspect of the invention is described with reference to the drawings.

As shown in fig. 6, the vehicle 200 may include the battery pack 100 according to the embodiment of the first aspect of the invention described above.

For example, when the battery pack 100 is applied to the vehicle 200, the case 1 may be mounted to the vehicle body 101 of the vehicle 200 or may be integrated with the vehicle body 101. When the housing 1 is mounted on the vehicle body 101, it is described that the housing 1 and the vehicle body 101 are two independent components, and are connected together by means of assembly, which is beneficial to simplify the structure of the housing 1 and is convenient for processing the housing 1 and the vehicle body 101, the connection mode between the housing 1 and the vehicle body 101 is not particularly limited, and the housing 1 and the vehicle body 101 may be detachably connected or non-detachably connected. When the housing 1 is integrated with the vehicle body 101, at least a portion of the housing 1 is integrated with the vehicle body 101, which means that the at least a portion of the housing 1 and the components of the vehicle body 101 are formed as a single integral piece, which is not detachable, for example, the at least a portion of the housing 1 and the components of the vehicle body 101 are integrally formed, or are subjected to secondary injection molding, so as to ensure the connection reliability between the housing 1 and the vehicle body 101, ensure the vehicle 200 is used reliably, and simultaneously save the components of the vehicle 200, without additionally providing a protective housing, etc., so as to save the material consumption of the vehicle 200, reduce the cost, and improve the flexibility of the design of the vehicle 200. Therefore, the connection mode between the housing 1 and the vehicle body 101 has good design flexibility, and the diversified design of the vehicle 200 is facilitated.

According to the vehicle 200 of the embodiment of the invention, the battery pack 100 is adopted, so that the structure of the vehicle 200 is simplified, and the assembly efficiency of the vehicle 200 is improved.

Other configurations and operations of the vehicle 200 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

The battery pack 100 according to an embodiment of the present invention is described in detail in one specific embodiment with reference to fig. 1 to 4. It is to be understood that the following description is only exemplary, and not a specific limitation of the invention.

As shown in fig. 1 to 3, the battery pack 100 includes a housing 1, a battery 2 and a connecting assembly 3, the housing 1 includes a housing body 11 and a housing cover 12, a mounting cavity 10 is defined in the housing body 11, a top of the mounting cavity 10 is opened to form an opening 10a, the housing cover 12 is disposed on a top of the housing body 11 to cover the opening 10a, and the housing body 11 and the housing cover 12 are fixedly connected by a fastening member 14, such as a lock screw.

Information connection end 42 and power connection end 41 are embedded on the diapire of shell body 11, and information connection end 42 sets up with 41 intervals of power connection end, and power connection end 41 is two, and two power connection ends 41 are located the left and right sides of information connection end 42 respectively. Therefore, the power connecting end 41 and the information connecting end 42 are easily arranged without forming through holes on the shell 1, and the processing procedure of the shell 1 is simplified.

As shown in fig. 4, the connecting assembly 3 is disposed in the mounting cavity 10, the connecting assembly 3 includes a first connecting member 31 and a second connecting member 32, the first connecting member 31 and the second connecting member 32 are both formed as a magnetic ring 30, and the first connecting member 31 and the second connecting member 32 are magnetically attracted and matched, the first connecting member 31 is fixedly disposed on the cavity wall 10b of the mounting cavity 10 through a first insulating rubber pad 51, and the second connecting member 32 is fixedly disposed on the outer wall surface of the battery 2 through a second insulating rubber pad 52.

The battery 2 is mounted in the mounting cavity 10 through the opening 10a from top to bottom, the connecting assembly 3 is disposed between the lower end surface of the battery 2 and the bottom wall of the housing 11, and the connecting assembly 3 surrounds the power connecting end 41, the information connecting end 42, the electrode terminal 211 of the battery 2 and the sampling terminal 212 of the battery 2. The plurality of electrode terminals 211 of the battery 2 include a positive electrode terminal 2111 and a negative electrode terminal 2112, and the positive electrode terminal 2111 and the negative electrode terminal 2112 are respectively located on the left and right sides of the sampling terminal 212. From this, battery 2 need not to set up locking fixed knot structure, simple to operate in self action of gravity and coupling assembling 3's limiting displacement is fixed in installation cavity 10 in addition.

As shown in fig. 4, the electrode terminal 211 is inserted into the power connection terminal 41, and the sampling terminal 212 is inserted into the information connection terminal 42. Of course, the electrode terminal 211 and the power connection end 41 may be in limit fit, contact fit, etc., and the sampling terminal 212 and the information connection end 42 may be in limit fit, contact fit, etc.

It is understood that when the battery pack 100 is applied to the vehicle 200, the battery pack 100 can be used as an on-board starting power source, and the electrode terminal 211 and the sampling terminal 212 of the battery 2 are both connected with the vehicle body 101 in a communication manner, so that the normal and safe running of the whole vehicle 200 is realized.

Therefore, the battery pack 100 according to the embodiment of the invention has the advantages of fewer parts, simple structure, lower cost, effective simplification of the assembly process, improvement of the assembly efficiency of the battery pack 100, and good practicability and integration.

In addition, it can be understood that, since the battery 2 is stably fixed in the mounting cavity 10 under the action of its own gravity and the limiting action of the connecting assembly 3, the arrangement manner of the battery pack 100 shown in fig. 1 is only for convenience of description, and in practical applications, the battery pack heat exchanger 100 of the present invention is not limited to the arrangement manner, for example, the left and right sides of the battery pack 100 in fig. 1 may also be vertically arranged or obliquely arranged, so as to implement flexible arrangement and mounting of the battery pack 100 to meet the requirements of different application scenarios.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for convenience in describing and simplifying the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack, comprising:

the device comprises a shell, a power connecting end and an information connecting end, wherein an installation cavity is defined in the shell, and the wall of the installation cavity is provided with the power connecting end and the information connecting end;

the battery, the battery install in the installation cavity, the battery has electrode terminal and sampling terminal, electrode terminal with power connection end cooperation and electricity are connected, sampling terminal with information connection end cooperation and electricity are connected.

2. The battery pack of claim 1, wherein the electrode terminal and the sampling terminal are located on the same side end face of the battery.

3. The battery pack according to claim 1 or 2, further comprising:

coupling assembling, coupling assembling includes first connecting piece and second connecting piece, first connecting piece is established on the casing, the second connecting piece is established on the battery, first connecting piece with the cooperation of second connecting piece, so that the electrode terminal with the power link electricity is connected, just the sampling terminal with the information link electricity is connected.

4. The battery pack of claim 3, wherein the first connector and the second connector are magnetically engaged.

5. The battery pack of claim 4, wherein at least one of the first connector and the second connector is formed as a magnetic ring that surrounds the electrode terminal and the sampling terminal.

6. The battery pack of claim 4, wherein the first connecting member is secured to the housing by a first insulating rubber mat and the second connecting member is secured to the battery by a second insulating rubber mat.

7. The battery pack of claim 1, wherein the housing comprises:

the shell body is internally provided with the installation cavity, the side wall of the shell body is internally embedded with the information connecting end and the power connecting end, and the information connecting end and the power connecting end are arranged at intervals;

and the shell cover is arranged at the end part of the shell body so as to seal the mounting cavity.

8. The battery pack of claim 1, wherein the battery comprises:

the sampling device comprises a shell, a sampling terminal and a sampling module, wherein a plurality of sampling lines are arranged in the shell and are electrically connected with the sampling terminal;

the multiple pole core groups are arranged in the shell, each pole core group comprises at least one pole core, and is in series connection with the multiple pole core groups, and the multiple pole core groups are respectively in corresponding electrical connection with the multiple sampling lines.

9. The battery pack according to claim 8, wherein a plurality of insulating film bags are further disposed in the outer casing, and the plurality of insulating film bags wrap the plurality of pole core groups in a one-to-one correspondence manner.

10. A vehicle characterized by comprising a battery pack according to any one of claims 1-9.