CN2665941Y - Driving battery of electric automobile - Google Patents
Driving battery of electric automobile Download PDFInfo
- Publication number
- CN2665941Y CN2665941Y CN 200320119262 CN200320119262U CN2665941Y CN 2665941 Y CN2665941 Y CN 2665941Y CN 200320119262 CN200320119262 CN 200320119262 CN 200320119262 U CN200320119262 U CN 200320119262U CN 2665941 Y CN2665941 Y CN 2665941Y
- Authority
- CN
- China
- Prior art keywords
- battery
- electric automobile
- automobile power
- power battery
- electrode post
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Y02E60/12—
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a power battery pack of an electric automobile. A screw hole is vertically drilled at the positive and the negative electrode end faces of each monomer battery and a bolt is used for fixing a battery voltage sampling tablet on the screw hole, which ensures the battery voltage sampling tablet not to contact the elements such as a metal connecting belt, a battery electrode pole hold-down nut, etc. on the battery positive and the negative electrode poles, thereby decreasing unnecessary contact pressure drop and improving the sampling precision of the battery voltage.
Description
[technical field]
The utility model relates to a kind of electric automobile power battery group, especially a kind of electric automobile power battery group with screw battery voltage sampling sheet.
[background technology]
In the electric vehicle engineering, voltage accuracy to storage battery is had relatively high expectations, and especially carry out under the state of high current charge-discharge at storage battery, as deviation appears in the real voltage of cell voltage of sampling out and battery, light then easily cause the damage of storage battery, heavy then will bring some unsafe hidden danger.
Known, electric automobile power battery group commonly used as shown in Figure 1, electric automobile power battery group (lithium ion battery group) is connected in series by metal joining strips 3 by the multi-section lithium ion cell and forms, wherein each monomer lithium ion battery all has positive and negative electrode post 5, and fixes on it by battery electrode post hold-down nut 4.Metal joining strips 3 connects the positive and negative electrode post 5 of each monomer lithium ion battery respectively, the sheet 2 of then voltage metal being sampled is set on the battery electrode post 5, and the voltage metal sheet 2 of sampling is crimped on the metal joining strips 3, thereby extract cell voltages by voltage metal sampling sheet 2 with metal nuts 1.
But by this mode, when battery pack is carried out in the process of high current charge-discharge, because the existing of contact resistance (between metal joining strips 3 and the battery electrode post hold-down nut 4, voltage metal sample between sheet 2 and the metal joining strips 3), and the impedance of metal connecting piece etc. can produce bigger voltage drop, thereby makes the voltage of sampling out and the real voltage of battery deviation occur.
In order to reduce sampling deviation, the common practice is that each metal connecting piece is carried out electroplating processes, improve its surface anticorrosive ability, guarantee the reliability of contact, but in this practice, complex treatment process, cost height and because the contact of metal connecting piece still exists can not fundamentally be avoided the problems referred to above.
[utility model content]
Technical problem to be solved in the utility model is a kind of contact voltage drop that reduces in the battery tension sampling process to be provided, thereby to improve the electric automobile power battery group of sampling precision.
For solving the problems of the technologies described above, the utility model electric automobile power battery group, its both positive and negative polarity end face at each cell vertically is drilled with screw, and is screwed the battery voltage sampling sheet thereon.
So just can make the battery voltage sampling sheet avoid contacting elements such as metal joining strips on the battery plus-negative plate post, battery electrode post hold-down nut, reduce the unnecessary contact pressure drop, thereby also improved the sampling precision of cell voltage.Simultaneously, use the electric automobile power battery group of this mode, it is simple in structure, sampling is accurate, with low cost, thereby has good practical value.
[description of drawings]
In conjunction with example the utility model is described in further detail with reference to the accompanying drawings:
Fig. 1 is the structure principle chart of electric automobile power battery group commonly used;
Fig. 2 is the structure principle chart of the utility model electric automobile power battery group.
[embodiment]
See also Fig. 2, the utility model electric automobile power battery group is the improvement of prior art, electric automobile power battery group (lithium ion battery group) is connected in series by metal joining strips 3 by the multi-section lithium ion cell equally and forms, wherein each monomer lithium ion battery all has positive and negative electrode post 5, and fix on it by battery electrode post hold-down nut 4, and connect the positive and negative electrode post 5 of each monomer lithium ion battery with metal joining strips 3 respectively.
The improvements of the utility model electric automobile power battery group are, on the end face of battery electrode post 5, vertically be drilled with screw from top to bottom, the sheet 2 of then voltage metal being sampled is placed on the end face of battery electrode post 5, with screw 6 its crimping is fixed on the battery electrode post 5 again, thereby extracts cell voltage by voltage metal sampling sheet 2.
Like this, just can make voltage metal sampling sheet 2 avoid contacting metal connecting band 3 and cause when the battery high current charge-discharge, the contact voltage drop that causes, and then guaranteed the accuracy of voltage sample.
The foregoing description just embodies the preferred version of technical solutions of the utility model, those skilled in the art to wherein some part some changes that may make all embodied principle of the present utility model, belong within the protection range of the present utility model.
Claims (3)
1, a kind of electric automobile power battery group, connect the positive and negative electrode post of each cell successively by metal joining strips, it is characterized in that: be drilled with screw on the positive and negative electrode post of each cell, the voltage metal sheet crimping of sampling be fixed on the battery electrode post by screw.
2, as claim 1 described electric automobile power battery group, it is characterized in that: described electric automobile power battery group is connected in series by the multi-section lithium ion cell and forms.
3, as claim 1 described electric automobile power battery group, it is characterized in that: described screw is vertically to be drilled to from top to bottom on the end face of battery electrode post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320119262 CN2665941Y (en) | 2003-12-12 | 2003-12-12 | Driving battery of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320119262 CN2665941Y (en) | 2003-12-12 | 2003-12-12 | Driving battery of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2665941Y true CN2665941Y (en) | 2004-12-22 |
Family
ID=34347635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320119262 Expired - Lifetime CN2665941Y (en) | 2003-12-12 | 2003-12-12 | Driving battery of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2665941Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487717A (en) * | 2013-10-14 | 2014-01-01 | 奇瑞汽车股份有限公司 | Battery detection system and battery detection method |
| WO2017054186A1 (en) * | 2015-09-30 | 2017-04-06 | Byd Company Limited | Connector for power batteries, power battery moduel, power battery pack and vehicle |
| CN111564660A (en) * | 2020-06-19 | 2020-08-21 | 义乌易换骑电池有限公司 | Lithium battery pack capable of preventing voltage acquisition interference |
-
2003
- 2003-12-12 CN CN 200320119262 patent/CN2665941Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487717A (en) * | 2013-10-14 | 2014-01-01 | 奇瑞汽车股份有限公司 | Battery detection system and battery detection method |
| WO2017054186A1 (en) * | 2015-09-30 | 2017-04-06 | Byd Company Limited | Connector for power batteries, power battery moduel, power battery pack and vehicle |
| CN111564660A (en) * | 2020-06-19 | 2020-08-21 | 义乌易换骑电池有限公司 | Lithium battery pack capable of preventing voltage acquisition interference |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131212 Granted publication date: 20041222 |